The Kynix Blog

Ⅰ IntroductionThe vacuum tube was an essential part of early radios, used to create and amplify the electrical signals needed for the radio to work. The vacuum tube radio was a new stuff of the early 20th century, and immediately became the "new favorite" of that era with the launch of the radio show. Due to the continuous development of technology and the emergence of transistors, vacuum tubes were swept away by the powerful transistors in the 1960s and 1970s. With the improvement of people's lives, they have a new understanding of sound quality, and people are once again interested in the beautiful sound of vacuum tube radios.Vacuum Tube Radio RepairCatalogⅠ IntroductionⅡ Vacuum Tube Radio Circuit2.1 Input Circuit2.2 Converter Stage2.3 Detection Stage2.4 Intermediate Amplifier Stage2.5 Audio Voltage Amplifier2.6 Audio Power Amplifier Stage2.7 RectifierⅢ Classification3.1 AM Radio3.2 Heterodyne Radio3.3 FM Radio3.4 Service LifeⅣ Audio Maintenance PrincipleⅤ Specific Troubleshooting5.1 Tube Inspection5.2 Resistor Inspection5.3 Capacitor Inspection5.4 Transformer InspectionⅥ One Question Related to Vacuum Tube Radio and Going FurtherCompared with the semiconductor radio, the biggest advantage of the tube radio is that the sound quality is obviously better than that of the semiconductor radio. The second is that it is stable and elegant, with classical temperament. In addition, the history of tube radios is far greater than that of semiconductor radios, which are more valuable for collection. Ⅱ Vacuum Tube Radio CircuitFigure 1. 12AV6 Vacuum Tube Radio Circuit2.1 Input CircuitThe circuit from the antenna of the radio to the input of the first-stage tube is called the input circuit. It has two tasks to complete: One is to transmit the high-frequency signal voltage induced on the antenna to the grid of the first electron tube (usually the frequency conversion stage). To accomplish this task, there should be a certain coupling between the radio antenna and the input circuit to facilitate signal transmission. Second, because the antenna induces a lot of signals, it is necessary to select the radio broadcast signal you want to listen to  suppress unnecessary signals. To accomplish this task, the input circuit should be composed of a selective resonant circuit, so the input circuit should compose of coupling elements and the resonant circuit.Depending on the coupling form of the antenna and the resonance circuit. The input circuit can be divided into three types: inductive coupling (transformer coupling) circuit, capacitive coupling circuit, and inductive capacitive coupling circuit. Since the voltage transmission coefficient of the inductive coupling circuit is relatively high and uniform, tube radio usually adopts this type. In order to improve the suppressing ability of mid-frequency interference (because the intermediate-frequency detuning is smaller for medium wave, and it is larger for short wave.). An intermediate-frequency trap circuit is also applied in the antenna loop.2.2 Converter StageThe converter stage is located between the input circuit and the intermediate amplifier stage. Its function is to change the high-frequency amplitude modulation signal into a fixed intermediate-frequency amplitude modulation signal. In order to complete the task, the frequency converter should be composed of four parts: oscillator (generating a high frequency constant-amplitude oscillating voltage with an intermediate-frequency different from the frequency of the external radio signal), a high frequency circuit (used to select the radio signal, usually it is the input circuit), non-linear components (usually pentagrid converter, used to change the frequency), the intermediate-frequency loop.The converter stage of a tube radio is generally composed of a pentagrid converter tube. The high-frequency circuit is connected to the third grid (signal grid). The oscillator is composed of the screen grid (oscillation anode), the first grid (oscillation grid) and the cathode. The anode load is an intermediate frequency resonance circuit. Therefore, the main mark that distinguishes the converter stage from the tube amplifier is the pentagrid tube and three resonant circuits. The frequency converter can be divided into single-grid converter and double-grid converter according to the different ways of inputting signal voltage and local oscillation voltage. The single-grid inverter applies the signal voltage and the local oscillation voltage to the same electrode of the inverter tube, so the traction effect is large, and the operation is unstable. The double-gate inverter adds the signal voltage and the local oscillation voltage to the different electrodes of the inverter tube separately, the traction effect is greatly reduced, thus double-bar frequency converters are commonly used in tube radios.The structural feature of pentagrid tubes is that there are two metal sheets on the second grid, called the collection screen. It blocks the electrons moving to the anode. There are two metal rods on the third grid in the gap of the collecting screen, which carry negative potential. When the electrons passing through the second grid hit the negatively charged metal rod while advancing, the electrons flying to the anode is divided into two streams, one flying to the anode, and the other being collected by the collecting screen without returning to the cathode. In this way, when the signal grid voltage changes, it will only affect the distribution of the two currents, and has little effect on the total current. Because the local oscillator adopts the total current feedback, the oscillator is basically not affected, so the oscillation frequency is stable. There are many types of frequency converter circuits with different performances, but their principle difference lies in the way of local oscillation feedback. 2.3 Detection StageThe detection stage is located between the intermediate amplifier stage and the audio voltage amplifier stage. Its task is to transform the intermediate-frequency signal into the original modulated audio signal. To complete the task of frequency conversion, the detector must consist of an intermediate-frequency signal circuit (it is the output circuit of an intermediate-frequency amplifier), a non-linear elements (usually a diode), and a load (resistor). 2.4 Intermediate Amplifier StageThe intermediate amplifier stage is located between the frequency converter stage and the detection stage, and specifically amplifies the 465kHz intermediate-frequency signal. The main feature of the intermediate amplifier stage is: in order to achieve automatic gain control, the intermediate amplifier tube generally uses a remote cut-off tube. The intermediate-frequency transformer is the main component of the intermediate-frequency amplifier, and its quality directly affects the quality of the radio. In addition, a shielding cover is usually used to avoid the parasitic coupling between the intermediate-frequency loop and the eternal to improve the working stability. The shielding cover is made of good conductors such as aluminum and copper, and is attached to the case (ground potential), to isolate the entry of high frequency electromagnetic fields. 2.5 Audio Voltage AmplifierTo make the power amplifier stage output a certain amount of power, its anode current must have a certain amount of AC component, which requires that the grid audio signal voltage used to control the anode current must have a sufficiently large amplitude (voltage). The output voltage of the detector stage is usually very low. Therefore, between the power amplifier stage and the detector stage, there is always one or several audio voltage amplifier stages. Its function is to amplify the audio signal voltage to meet the input signal requirements.The audio voltage amplifier stage can be divided into a resistance-capacitance coupling amplifier and a transformer-coupled amplifier according to the different anode load forms. In the vacuum tube radio, the resistance-capacitance coupling amplifier is used mostly. The audio voltage amplifier stage and the detection stage usually share an electron tube. The input signal is generally controlled by a volume control potentiometer to adapt to different broadcasts and listening situations. Some radios have a tone control circuit connected to the output end of the audio voltage amplifier stage to flexibly change the frequency characteristics of the amplifier to make the sound pleasant. Due to the different forms of volume and tone control circuits. There are many types of audio voltage amplifier stages. 2.6 Audio Power Amplifier StageThe audio power amplifier stage is the last stage of the tube radio, and its function is to output a certain amount of audio power to make the speaker work normally. Someone may wonder, can a voltage amplifier be used instead of a power amplifier? This will not work. Although there is no difference between the basic circuits of a power amplifier and a voltage amplifier, due to the different tasks of the two, there are significant differences in the selection of electron tubes, the circuit components, and the nature of the load. It should be pointed out that the so-called power amplifier does not amplify the input power itself, but uses the control function of the electron tube grid voltage to convert the power supplied by the anode circuit DC power supply into the required audio power. From the viewpoint of energy conversion, the power amplifier is an energy converter. 2.7 RectifierThe rectifier stage of the tube radio is composed of three parts: power transformer, rectifier tube and filter. There are many forms of rectifier circuits, and the most common is a full-wave rectifier circuit.Ⅲ Classification3.1 AM RadioIn the era when tube radios were popular. AM radios were the mainstream products. Amplitude modulation is to modulate the high frequency carrier with audio signal. Its waveform is symmetrical up and down, and the amplitude is the same as the modulated signal. After detection, the highfrequency component is filtered out to obtain the audio signal. The frequency of the carrier signal (the frequency of the broadcasting station) is the carrier frequency.AM radios can receive medium wave and short wave broadcasts, and some can receive long wave broadcasts. Since the mid-band frequency interval has been unified to 9KHz, its highest audio frequency is only 4KHz. The sound quality is affected, and electromagnetic interference is relatively large.There are two main types of AM radios: direct-amplifier type and heterodyne type.1)Direct-amplified radio, also known as high-amplification radio, its typical circuit structure is such as: High-amplification→Detection→Low-amplification→Power amplifierA circuit that uses a grid detector circuit and a high-frequency positive feedback, called a regenerative radio, can achieve better sensitivity and selectivity. It can receive AM telegraph signals with high-amplifier and short-wave. Old Japanese-made radios mostly have this circuit. High-frequency signals of direct-amp radios are prone to self-excitation, and the high-end and low-end gains are uneven, and there is no high-amplifier regeneration. Widespread use of reed speakers with poor sound quality made it obsolete. Out of nostalgia, some enthusiasts are still keen on getting recycled radios. The regenerative circuit can not only be applied to direct-amplified radios, but also in simple heterodyne radios, because proper positive feedback can also be used to improve sensitivity.Simple regenerative radios often use reed speakers, which have high impedance (about 10K) and high sensitivity, and can be directly used as the load of the power amplifier tube. Its frequency range is only 350~3000Hz, so the sound quality is poor. Later regenerative radios used moving coil speakers, and the sound quality was better. However, due to the low impedance, an output transformer is needed, and its primary impedance must match the load impedance of the power amplifier tube. Moving coil speakers are divided into permanent magnet, constant magnet and excitation type. In addition, excitation horns are used in AC tube radios, and their excitation coils can also be used as filter chokes. 3.2 Heterodyne RadioThe heterodyne radio uses a frequency conversion circuit. The signal generated by the high-frequency oscillation circuit is different from the input signal at a certain frequency. After the two are combined, a fixed intermediate frequency signal (455~465KHz) is generated. The oscillation circuit needs independent vacuum tube as a part before the emergence of the dedicated frequency conversion tube. Some people call the oscillation frequency higher than the signal frequency by a heterodyne type.Heterodyne plus intermediate-frequency amplifier circuit is called superheterodyne. This type of circuit requires a single electron tube to oscillate. Later a multi-pole or composite tube dedicated to frequency conversion appears, such as 1A2, 6A2, 6SA7GT, 6U1, 6K8, etc. The superheterodyne type is the most common circuit of commercial radios. It has an automatic volume control circuit and can add tuning instructions. The superheterodyne radio can obtain more stable and higher gain due to the fixed frequency amplified. The disadvantage is that there is image frequency interference.The circuit structure of a typical superheterodyne radio is as follows:Frequency conversion→Middle amplifier→Detection→Low amplifier→Power amplifier 3.3 FM RadioFM is to use audio signal to modulate the frequency of high-frequency carrier. Its advantages are strong anti-interference ability, high signal-to-noise ratio, good frequency bandwidth and sound quality, and the audio frequency can reach 20~15000Hz. Because the FM audio work in the ultra-high frequency band, it can accommodate many radio stations. Because of its linear propagation characteristics, the same frequency can be reused at a distance of hundreds of kilometers, which can effectively solve the problem of congestion of medium and short-wave radio stations.Modern FM broadcasting is compatible with stereo and mono (in the early days of stereo broadcasting, two frequencies were used and received by two radios). Amateurs like to use a simple super-regenerative circuit to receive FM broadcasts. Because it works in a self-oscillation state, it is unstable and has strong super noise. 3.4 Service LifeThe general design life of the valves is 2000 hours (special tube has 5000~10000 hours), but in reality, many electron tubes break after using 2000 hours, for example, there is no sound. Its performance is not up to the design standard. When there is not any sound from the actual tube, it may have reached 3000 hours or more. The actual service life of the amplifier tube of the front stage is longer. To cite the simplest example: the old picture tube (picture tube is also a kind of vacuum tube) of a TV set, the actual life span usually excesses 10 years.If use it for 5 hours a day, you need to change the tube once a year to meet the actual design performance, and the replaced tube can also be used for other purposes.Ⅳ Audio Maintenance PrincipleHow to repair the failure of the vacuum tube radio depends on the difficulty of the failure. Under normal circumstances, the following steps are used.First point is to seek clues. What is the difference in the use of the radio before and after the failure, thinking about whether it has been repaired, or what components have been replaced, etc.Second point is the fault display. For faults such as flashover, smoking, burning, etc. Turn off the power immediately and find the factor to avoid damage to the audio. According to the displayed failure phenomenon, rotate audio button to compress the failure to clarify where the failure may occur, and to provide necessary information for analysis and judgment.Third point is analysis and judgment. Make comprehensive analysis and judgment based on the information obtained by self-examination inference and fault display. List all possible direct causes of the failure, and develop a scientific inspection procedure. This not only prevents blind movement, but also accumulates maintenance experience and improves efficiency.Fourth point is troubleshooting. Gradually narrow the scope of the fault, and accurately detect the fault point. Sometimes it refers to (such as electron tubes, capacitors, resistors, coils, transformers, etc.) connecting wires, welding points of a certain component. Determine where the failure occurred, which is important for fault repair. Tube radios are usually divided into high-frequency part, intermediate frequency part, audio part, power supply part and auxiliary circuit according to their working frequency and circuit function. The fault should be compressed to a specific circuit, such as DC circuit, AC circuit, or the anode circuit, the screen grid circuit, grid circuit, cathode circuit, etc. Since each loop in the electronic tube circuit affects each other, a failure of a component may affect several loops at the same time. Therefore, in the inspection process, comprehensive analysis should be performed, that is, each circuit should not be isolated.Fifth point is repairing practice. The repair test can be performed after determining the cause of the failure.Sixth point is repair inspection. In the actual maintenance process, if a failure point is detected, it must be immediately eliminated and repaired. After all the faults are investigated, the radio should be inspected as necessary to ensure the quality of the repair. The specific content of the inspection depends on the specific fault and the type and quantity of the instrument. The simplest one should also be auditioned and take general technical observations.Ⅴ Specific TroubleshootingA radio is composed of many components, and component damage is the main cause of radio failure. When the fault location is gradually reduced, the quality of the components must be checked to determine the fault. Therefore, inspecting components is one of the main methods to find the cause of failure.5.1 Tube InspectionThe common faults of electronic tubes are mostly filament broken, poor contact of the electric board, broken pole, pole touching, leakage, breakdown between the cathode and the filament, aging, air leakage, and micro-sound effects. When the radio is turned on, if the filament of a certain tube does not light up, the filament may be broken or a serious leak. The tube shell is cold when the filament is broken, and the tube shell is often warm when the gas leaks. Unplug the tube for further inspection. Use a multimeter to measure the filament resistance at the "R×1"gear. If the meter indicates infinite, the filament is disconnected. If the indicator of the needle is zero, it means that the tube is short-circuit. When the indicator of the needle indicates a constant value, it means that there is leakage between the electrodes. The smaller the resistance, the more serious the leakage. At this time, the top of the tube is usually milky white.The electron tube electrode is in poor contact, intermittently electrode touching (some are hot electrode touching), and the radio will sometimes have no sound or noise. This type of failure is characterized by being greatly affected by vibration. Therefore, you can tap the tube shell lightly. If there is no sound or noisy sound (sometimes there may be no sound or normal sound after tapping), it means that the tube electrode is in poor contact or intermittently electrode touching. When the fault is serious, the electrode is completely disconnected, which means a broken pole. The tube does not work, and the radio is silent.When the electron tube ages, the positive current and the amplification will decrease. If it was frequency conversion tube, the local oscillator will oscillate abnormally, resulting in the radio cannot receive the radio signal, low sound, or the high frequency end of the band can receive one or two radio stations, and the low-frequency end cannot receive the radio signal. The micro-phonic effect of the vacuum tube is often caused by improperly fixing the electrode, and it can be judged by tapping the tube case lightly. Sometimes it is difficult to determine whether the valve is normal or not. The easiest way is to replace it with the same type of electron tube. If the failure disappears, it means that there is a problem with the vacuum tube. 5.2 Resistor InspectionThere are two types of resistors used in radios: fixed resistors and variable resistors (potentiometers). They are not easy to damage. Possible damages include: resistor burnout, resistor body broken or lead broken, internal open circuit, or poor lead contact, etc. Some of failure can be observed. For example, the increase of fault current in a certain part of the circuit, which means the resistor is burned out. At this time, the paint layer on the outside of the resistor is burnt and hot. If the resistor is internally disconnected or the resistance value changes, it can be checked by measuring the ohm gear of a multimeter. If the meter indicates infinity, it means that the resistor is internally open; if the measurement result is too far from the nominal value (the error exceeds 20%), it means that the resistance has deteriorated.The lead of the resistor body is in poor contact and will be broken unbroken, which will cause noise or sound from the radio. This kind of failure is very susceptible to vibration and produces vibration noise. Therefore, you can gently shake the resistor body to see if the sound changes. It can also be measured with a multimeter. When measuring, shake the resistor body. If the pointer is unstable, it means that the contact is bad.The potentiometer that controls the volume of the radio usually has a power switch. The common faults of the potentiometer are: dirty carbon film, wear of the carbon film, poor contact of the sliding contact, loose lead-out piece, burnt of the carbon film, broken bakelite frame of the sliding contact, leakage, and damage to the power switch. When the potentiometer is normal, the radio can only hear a very light sound after power on. If the potentiometer is closed, the broadcast voice should not be heard. After turning off the power, there is no sound. If you cannot control the power on and off, it indicates that the power switch is partially damaged; if the noise is very loud, especially when the volume is adjusted, the loudspeaker has a large sound or interrupted sound, it means that the potentiometer is in poor contact. 5.3 Capacitor InspectionThere are two types of capacitors used in radios: fixed capacitors and variable (semi-variable) capacitors. The faults of fixed capacitors are usually leakage, breakdown, internal open circuit, poor internal contact, broken lead, or capacity failure, etc. The common faults of variable capacitors are bump, short circuit, leakage and so on. 5.4 Transformer InspectionCommon faults in transformers are coil mold breakage, a partial short circuit, leakage and other faults. A multimeter can also check out the coil mold. When high-frequency coils and intermediate-frequency transformers are locally short-circuited, it is not easy to measure. The substitution method can be employed to test or adjust the loop frequency to figure problems out.Ⅵ One Question Related to Vacuum Tube Radio and Going Further6.1 QuestionWhy do vacuum tubes sound better?6.2 AnswerTubes sound better because their distortion products are more musical. Those are the fundamental reasons why tubes simply sound better. Vacuum tubes are the more linear and require less feedback. Tubes are voltage amplifiers as opposed to transistors which are current amplification devices. Frequently Asked Questions about Vacuum Tube Radio1. What is a vacuum tube radio?VACUUM TUBE RADIO. Vacuum Tube Radio. By the late 1920s, vacuum tube radio equipment replaced the primitive spark-gap systems on most merchant ships. This new equipment could send and receive signals virtually worldwide, by using high frequency or "short-wave" bands. 2. How do radio vacuum tubes work?The basic working principle of a vacuum tube is a phenomenon called thermionic emission. It works like this: you heat up a metal, and the thermal energy knocks some electrons loose. ... When the cathode is heated, and a positive voltage is applied to the anode, electrons can flow from the cathode to the anode. 3. Why are vacuum tubes better for audio?Tube amplifiers sound better because of the euphonic distortions they add to the music, as well as plenty of other reasons I'll cover below. ... We use tubes simply because they make the music we create sound better: smoother, warmer and cleaner. Ditto for guitar amplifiers used in creating music. 4. How do you know if a vacuum tube is bad?When a vacuum tube develops an air leak (a small crack or bad seal by a pin for example) this getter color will change to pure white. If you see this you know with 100% certainty that the tube is bad. Third, look for a purple glow that is very focused around specific elements inside the tube.

CatalogIntroductionⅠ Alternator & Battery & Starter    1.1 What Does the Alternator Do?    1.2 What Does the Car Battery Do?    1.3 What Does the Starter Do?Ⅱ Bad Alternator Vs Bad Battery Vs Bad Starter    2.1 Bad battery    2.2 Bad starter    2.3 Bad alternator    2.4 Bad Alternator Vs Bad Battery Vs Bad Starter|Symtoms and SolutionsⅢ How to Determine If an Alternator or Starter or battery is Bad    3.1 Bad Alternator vs. Bad Battery    3.2 6 Bad Battery Symptoms    3.3 5 Bad Alternator Symptoms    3.4 Signs of Possible Need for Starter Repair    3.5 A Simple Solution To Alternator Or Battery Issues    3.6 How to Determine If an Alternator or Starter Is BadⅣ Bad Alternator and Bad Battery EffectsⅤ Common Causes of Car Battery FailureⅥ Risk of Driving with a bad alternator or battery    6.1 Risks of Driving with a Bad Alternator    6.2 Risks of Driving with a Bad BatteryⅦ 5 Tips for driving longer with a bad alternatorⅧ How Long Does An Alternator or A Battery Last?    8.1 How Long Does An Alternator Last?    8.2 How Long Do Batteries Last?Ⅸ How To Check Your Battery Or Alternator?    9.1 How To Test Your Alternator?    9.2 How To Test Your Battery?Ⅹ FAQs On the Alternator and Battery    1. Can A Vehicle Alternator Charge A Battery Bank?    2. How Long will a Battery Last with a Bad Alternator?    3. Will a Bad Alternator Kill a New Battery?    4. How do you tell if it’s your alternator or your dead battery?    5. Will an alternator charge a dead battery?    6. Can I disconnect a battery with the engine running to test the alternator?    7. How can I prevent my alternator from failing in the future?    8. Will A Dead Battery Damage My Alternator?    9. Is it possible to jumpstart a car with a bad alternator?    10. How Much Does A New Car Battery Cost?    11. How Much Does A New Alternator Cost?    12. How much does it cost to replace alternator?    13. Is It Worth Tt Fixing A Broken Alternator?    14. How Do I Know Which Battery To Buy For My Car?    15. Do I need a new battery after replacing alternator?    16. Is it safe to drive with a bad alternator?    17. Why is my new alternator not charging my new battery?    18. How long will a car run without alternator?    19. How far can I drive with a dead alternator?    20. Do alternators fail suddenly?Final ThoughtsIntroductionWe've all been in an automobile situation when we tried to start the engine but it wouldn't start. This does not indicate a problem with the engine, but rather with the battery or alternator. But which of them is it? People frequently misdiagnose their power problems, believing they have a poor battery when, in fact, they have a faulty alternator or vice versa. If your automobile won't start, it's most likely due to a problem with the battery or alternator. When you narrow it down to those two alternatives – bad alternator vs bad battery – you have a 50/50 probability of getting it right. But you don't want to take a chance. You want to do it correctly the first time. Knowing the difference between the symptoms of a bad alternator vs a bad battery is critical since it can dramatically enhance your chances of getting your car started while avoiding other difficulties. So, how can you know which one is stopping your car from starting, and how can you avoid changing the erroneous part? Let's have a look at a couple of methods for determining which components are causing this issue.Dead Battery Alternator Starter TestⅠ Alternator & Battery & Starter1.1 What Does the Alternator Do?The alternator is a critical part of your vehicle's electrical system. The alternator turns the energy generated by the crankshaft into usable electricity. It charges the car's battery by supplying energy to it. The battery powers the vehicle's starting system as well as all electrical accessories.If the alternator has a problem, it will not convert the energy in the crankshaft into electricity. As a result, even when the car is running and the crankshaft is producing energy, the battery will not receive an energy source. This would imply that the battery is not being recharged.When the battery's charge runs out, it will no longer be able to produce the necessary electricity for the car to start or run any of its electronics. Before the battery is completely exhausted, your vehicle may begin to exhibit unusual behavior. Flickering headlights and/or weird noises while driving are examples of this. You may misinterpret these as indicators of a dying battery, which is possible.1.2 What Does the Car Battery Do?The primary function of your automobile battery is to start the vehicle. Alternators are powered by a pulley system linked to your engine. Unfortunately, this implies that if your automobile is turned off, your alternator will not produce any energy.This is where automobile batteries come into play. The automobile battery will provide the initial energy required to start the vehicle. While the alternator provides the energy needed to operate the automobile and recharges the battery so it can start the next time it is shut off.The battery also regulates the amount of energy or power required by your car to run. This guarantees that each component receives the correct quantity of power.1.3 What Does the Starter Do?The starter gets its power from the battery and is responsible for starting the engine when you turn the key or press the start button. That energy is required to turn on the engine and start the vehicle. Simply, you're not going anywhere if your starter isn't working properly. Ⅱ Bad Alternator Vs Bad Battery Vs Bad Starter2.1 Bad batteryA car battery should have a lifespan of four to five years. It is not designed to store a charge for so long, thus it is recharged while driving by the car's alternator. The interior metal elements of a battery corrode with time, diminishing its ability to store a charge. A battery is essential for your automobile or truck because it powers the starter and electrical system while the vehicle is not running.Begin your investigation with the most typical cause of a car not starting: the battery. Those components, like all auto parts, have a limited lifespan. And they are subjected to a significant amount of abuse on a daily basis.2.2 Bad starterWhen you try to start the engine, you will hear grinding and whirring noises from under the hood. This is a sure sign of a bad starter. Sometimes the engine will start after a few moments, but those are the only sounds you'll hear when you expect your engine to start.The starter solenoid (also known as a starter relay) links the battery to the starter motor.What are the other warning signs of a broken alternator? When you try to start the engine, only the dashboard lights illuminate while the engine remains dead. You don't need to look any further: your car's starter needs to be repaired or replaced.2.3 Bad alternatorA faulty alternator should be the final item to inspect out of the three most prevalent faults that cause automobile starting troubles. When you start your car, do the headlights decrease or flicker? Or, if you've just jumpstarted your car, does the engine shut off as soon as you unhook the jumper cables? If you responded yes to either of those questions, your alternator is unable to charge your vehicle's battery. And it must be repaired or replaced as quickly as feasible.When the engine is running, an alternator charges the battery and powers the electrical system. When you start the engine, some newer vehicles will additionally display a battery-shaped warning light or "ALT" on the dashboard. Use that indicator as a caution to go to your nearest reputable auto shop and have your alternator repaired or replaced.2.4 Bad Alternator Vs Bad Battery Vs Bad Starter|Symtoms and SolutionsCAUSESYMPTOMSOLUTIONBad BatteryEngine won’t crank over and makes clicking noises when trying to start the vehicleRecharge the batteryThe engine requires numerous starts before engine cranks overCheck battery terminals for loose connections; replace if the battery is agedThe engine requires frequent jump startsReplace the batteryNo lights, no clicking noises when starting the vehicleJumpstarting is needed as the battery is dead; battery may require replacementBad StarterGrinding noises when attempting to start the engineStarter motor needs repair/replacementWhirring noises when starting vehicle but engine won’t crank overStarter motor needs replacementVehicle’s dashboard lights are on but the engine won’t turn overStarter motor needs repair/replacementBad AlternatorFlickering or dimming headlights while the engine is runningAlternator needs repair/replacementThe engine dies immediately after jump-startingAlternator needs repair/replacementDashboard light appears with “ALT” or battery iconAlternator needs repair/replacement Ⅲ How to Determine If an Alternator or Starter is BadIf your vehicle won't start, the most common causes are a fading or dead battery, loose or corroded connecting cables, a broken alternator, or a problem with the starter. It can be difficult to tell whether you have a battery or an alternator problem. Here's how to figure out which one is to blame.If your car won’t start，the common indicators listed above should assist in determining what is wrong.If you don't want to do your own diagnostics, obtain a jumpstart (and keep your vehicle going) and take it in to have your electrical system checked by an expert. The starting and charging mechanisms should also be checked.Battery tests on conventional wet-cell batteries should involve checking the fluid level, the posts (the terminals labeled + and -) for corrosion, and the cables for a snug fit and no corrosion.The shop should also inspect the alternator's voltage and current output, as well as look for evidence of faulty diodes, which are the components that convert electrical current from AC (alternating current) to DC (direct current) (direct current). If it's time to replace it and your car has been customized with power-hungry aftermarket items like a music system, ask if a larger-capacity alternator is required.If the alternator is working properly, the investigation will shift to other components of the starting and charging system.3.1 Bad Alternator vs. Bad BatteryEven though they serve different functions, the alternator and battery rely on one another to keep the car running. The alternator provides charges to the battery to refill the electrical charges that have been depleted, while the battery assists the ignition in turning on the engine and distributing electricity to other electrical components. Either one of them failing can cause the car to fail. Here are several methods for determining whether the problem is with the alternator or the battery.3.2 6 Bad Battery SymptomsIf your motor won't start, the automobile battery is frequently the first thing to go.However, before you get your jumper wires, be sure it's the battery that's causing the issue.Here are some warning indicators to look out for:1. Dim Dashboard Lights Or Headlights When the engine is turned off, the battery powers all of the vehicle's electrical accessories.Start the engine and look at the dashboard light symbols.Do they have any lights?This is a quick technique to see if the automobile battery is charged before starting the engine.Turn on your headlights.Are they dim or do they not light up at all?A faulty battery will result in dim dashboard lighting or headlights.A dead battery will not illuminate anything.2. Slow Engine Start Or No-Start If your engine won't start or takes much longer than usual, it's time to pull out the jumper wires and try a jump-start.If your motor starts and stays running but then won't start again, it's most likely a battery issue. If your vehicle quickly stalls, it is most likely due to a faulty alternator.NOTE: Make sure the negative battery wire does not connect to the dead battery's negative terminal (this is a typical mistake!). Clamp it to the deceased car's unpainted metal surface. More information can be found in our dead battery guide.3. Battery CorrosionCorroded battery terminals obstruct electrical energy, preventing the car battery from charging properly.Extensive corrosion may necessitate professional assistance or perhaps a battery replacement.Check for rusted or frayed battery wires as well.4. It’s An Old BatteryThe typical automotive battery has a lifespan of 3-5 years; the older the battery, the less capable it is of holding a charge. Older, failing batteries can acquire more corrosion as a result of leakage, resulting in a loss of charging capability.5. There’s An Odd SmellA leaking lead-acid battery will generate sulfuric vapors, giving off that strange, rotten egg odor. Replace your automobile batteries as soon as possible if it is leaking.6. A Warped BatteryIn severe temperatures, battery swelling is common when internal fluid and parts expand. If your car battery is bloated, twisted, or distorted in any manner, it should be replaced.If you're experiencing none of these six problems, a faulty alternator could be to blame.Tip: If troubleshooting becomes too time-consuming, use a mobile mechanic.3.3 5 Bad Alternator SymptomsIf the previous steps show that the battery is operational, it's time to investigate the alternator. There are certain bad alternator symptoms to watch for; learn how to identify if your alternator is bad here:Turn off the inside lights. While driving, take note of the brightness of the inside lights. The alternator is most likely to blame if the dashboard gradually dims.Headlights that are too dim or too bright. Do you notice how your headlights become brighter as you accelerate and dim as you come to a stop? This is frequently caused by the alternator failing to keep the battery fully charged.Growling sounds Before the trouble started, did you hear a growling sound? This can happen before an alternator fails.The odor of burning rubber or a hot wire. Is there any evidence that your alternator is overheating, such as the odor of burned rubber or hot wires? If this is the case, it is time to replace it.Examine the alternator. To test the alternator, some people advocate running the engine with the negative battery cable unplugged. However, this is not a good idea because it could harm your vehicle's electrical system and cause even more problems. Learn how to test an alternator.3.4 Signs of Possible Need for Starter RepairWhen the engine should be starting, there is a clicking sound.The dashboard lights illuminate, but the engine refuses to start.After a jumpstart, the engine will not start.3.5 A Simple Solution To Alternator Or Battery IssuesAllowing a professional to inspect your alternator or battery is the best approach to get your problems resolved. They'll even assist you in locating a new alternator or battery (if that's what you require)!When everything works well, driving your automobile is frequently a fluid operation that delivers you where you want to go without a second thought. However, if your car does not start regularly, it can be annoying and upsetting. What's the reason? It's most likely a faulty automobile battery or alternator. 3.6 How to Determine If an Alternator or Starter Is Bad Bad StarterBad AlternatorStep 1Turn on the ignition. If the engine won't start, either your battery is dead or your starter is broken. Keep an ear out for a click. Some starters hum while rotating and then click, while others click immediately after you turn on the ignition. If you hear a click, your starter may be defective. However, there are several more tests you can perform to ensure if it is bad.Start the automobile. If the car difficulties to start, it could be due to a faulty battery or alternator. If the battery is strong enough, you can still drive for a short time with a faulty alternator. If you have a battery gauge on your dashboard, check it. If it is low, it means that your battery is not receiving enough power from the alternator.Step 2Remove the hood. Wiggle your battery's connectors. Turn on your headlights to examine if they are brighter than usual or if they have dimmed. If your battery is not low and your car will not start, this is another sign that the problem is with your starter. Try jumping-starting your automobile to see if it helps it start. If this is the case, it indicates that the issue is not with your starter. If a jump makes no difference, you're probably looking at a bad starter.While the car is running, disconnect the negative battery cable. If the engine shuts down, it's a sign that the alternator isn't working properly. This is due to the alternator supplying a large portion of the car's electrical power while it is running.Step 3Lightly tap the starter a couple of times with a hammer. Try restarting the automobile. This can sometimes assist the starter to re-engage, but it will still need to be changed within the following few starts. If touching the starter causes the car to start the next time you crank it, this is another sign that your starter is faulty.When you replace the starter, take it to the parts store. They will be able to perform the last test to determine whether it is bad or not. If it is not, you will know you need to replace a different item. If the starter appears to be in good working order when tested, consult an expert at an auto parts store or a technician.Take the car to an auto parts store right away. They will be able to perform an electrical test on the alternator to see if it is faulty or if the battery itself is faulty and must be replaced. The alternator is far more difficult to replace than the battery. The only way to know for sure if the alternator and battery need to be changed is to have a professional test them both.Ⅳ Bad Alternator and Bad Battery EffectsIf an automobile has a defective alternator, it may be able to run for a short period of time depending on how much energy it uses. Once the battery has started the automobile, the alternator's purpose is to recharge it while you're driving. A faulty alternator will not charge the battery properly. Furthermore, if the battery is faulty, an alternator in good operating order will be unable to charge it.Ⅴ Common Causes of Car Battery FailureHigh temperaturesThe most common cause of battery failure is heat. In the positive plate, heat drives grid corrosion and grid growth. As heat corrodes the positive grid, the battery loses capacity and starting power, making it less capable of starting an engine - especially in colder temperatures.High vibrationVibration can cause internal components to be damaged and separated, resulting in diminished starting performance or even battery failure.Deep drains/failure to recharge after drops in voltageWhen a battery is discharged, the active components inside the plate form lead sulfate crystals, which are referred to as discharged material. These crystals gradually unite to produce larger crystals if they are not recharged. These larger crystals are more difficult to dissolve and recharge, and they eventually cause battery failure by disturbing the plate structure.A faulty alternatorA defective alternator will result in a battery that is either undercharged or entirely drained. Undercharged batteries have lower capacity and starting power. If the battery is constantly undercharged due to a faulty alternator, it will become deeply drained and sulfation will develop.Other Possible Causes of Car Battery FailureBattery application and installationThe battery is not being utilized for the purpose for which it was intended. For example, using an SLI (Starting-Lighting-Ignition) battery in a vehicle that requires a deep-cycle battery is a typical mistake.The battery is not suitably sized for the purpose.The vehicle has an excessive number of electrical accessories.The battery is not securely fastened.Service and maintenanceThe battery wires have not been properly cleaned or adjusted to fit the battery terminals.The electrical system of the car has been repaired or altered.The automobile has been in storage for a long time.Ⅵ Risk of Driving with a bad alternator or battery6.1 Risks of Driving with a Bad AlternatorEven if the automobile can drive with a damaged alternator, there are concerns because the battery will have to absorb the majority of the car's power outage. Some of the dangers are as follows:Because the alternator, which should refill the lost power, is faulty, the automobile may lose power and break down.Battery drain: A faulty alternator causes the automobile battery to drain faster than usual, leaving you stranded on the road. A faulty alternator might also reduce or eliminate the battery's ability to hold a charge.Fire hazard: Because of the increased burden on the battery, it may overheat, resulting in the battery catching fire.6.2 Risks of Driving with a Bad BatteryWhen your car's battery dies, you can jumpstart it and continue driving because the alternator will sustain the vehicle's power needs while on the road. However, the alternator will generate a lot of heat, and this heat will eventually harm the alternator.To prevent the expense of purchasing a new alternator, avoid continually jumping and operating your vehicle and instead get a new battery.Ⅶ 5 Tips for driving longer with a bad alternatorDriving with a bad alternator is not recommended, however, there are ways to extend your driving time if you're a considerable distance from where you can get your alternator repaired. Here are a few pointers to help you drive longer:When you need to start your automobile, keep a jumpstart booster or another car battery nearby.Limit the usage of electrical components like radios, lights, fans, and power windows while driving.Replace incandescent lamps with LEDs to reduce power consumption.Make sure you don't let your battery die fully before charging it again.As often as possible, fully charge the battery with a trickle charger.Ⅷ How Long Does An Alternator or A Battery Last?8.1 How Long Does An Alternator Last?Most alternators are designed to last 150,000 miles. This ranges from 7 to 10 years for the majority of people. As a result, when you have alternator troubles, it is usually caused by something else.If you frequently travel through tough circumstances such as dirt, sand, rain, and snow, your alternator may fail sooner. These conditions' dirt and grime can cause your alternator to fail immediately. In other circumstances, direct contact or rough driving conditions might cause internal alternator parts to be damaged.Although alternators are designed to extend the life of your vehicle, this does not mean that you do not have a problem with your vehicle. Before you rule it out, thoroughly inspect your vehicle and keep an eye out for the common indications.8.2 How Long Do Batteries Last?Alternators have a substantially longer lifespan than batteries. A battery's lifespan also varies greatly depending on the quality and type of battery purchased. Most new car batteries are supposed to last between 2 and 4 years.When you replace your battery, the lifespan will be determined by the battery's quality. High-quality batteries can last 5 to 7 years, although low-cost batteries often last 2 to 4 years.Ⅸ How To Check Your Battery Or Alternator?When your battery or alternator fails, you may experience similar sensations. Testing your battery and alternator is one of the most important things you can do. Fortunately, a voltmeter or multimeter may be used to test your battery and alternator. This is a simple, quick, and effective method for determining what is causing the problem with your automobile.9.1 How To Test Your Alternator?There are a few things you can do to put the starter through its paces. The starter solenoid is the simplest thing to examine. The starter solenoid functions as an electromagnet relay, allowing the starter to engage. The starter solenoid is directly connected to the starter.A visual inspection of the wires can be used to verify the starter solenoid. You will need to test the voltage if all of the wires are not broken and are properly connected.A simple multimeter or a circuit tester can be used to test the voltage. If the multimeter or circuit tester does not show any voltage or light up, the problem is most likely with your starter. This signifies that the starter isn't getting the power it needs to start.If the solenoid passes the test, the problem is most likely with the starter. It is not an easy task to inspect and test the starter. Unless you are a seasoned vehicle hobbyist, I recommend having a professional evaluate your starting.When you use a multimeter to test your alternator, it should read between 12.6 and 14.2 volts.Normally, 12.6 volts is regarded approaching low, but your alternator can still function normally at this point.If you get a lower result, your alternator most likely has a voltage problem.If you get a reading that is higher than 14 volts, your alternator is most likely faulty.9.2 How To Test Your Battery?Battery testers that are both effective and economical can be purchased online. A simple multimeter or voltmeter can also be used.To test, set your multimeter to 20 volts. Then, with the red probe, connect to the positive battery connection and the black probe to the negative battery terminal. You will get your reading after both probes are on the terminals.If your battery does not give you a proper reading after both instances, it is a warning that it is dying and you should test it further.When the automobile is turned off, a good battery should read between 12.2 and 13 volts.When the automobile is running, the battery voltage should be between 13 and 14.8 volts.Anything outside of these ranges indicates that your car battery is draining and not being refilled.It's vital to remember that if your engine's reading exceeds the range for a decent battery, it's a symptom of a bad battery or alternator problems.Ⅹ FAQs On the Alternator and BatteryHere are a couple of questions (and their answers) on these charging system components:1. Can A Vehicle Alternator Charge A Battery Bank?Yes. You may utilize a variety of setups to charge your house battery bank from the alternator. The simplest technique is to connect the alternator to the starting and house batteries in parallel. Others may use a charge controller and an external voltage regulator.2. How Long will a Battery Last with a Bad Alternator?A damaged alternator won't charge the battery, which means the battery will have to power the headlights and the rest of the car's accessories and systems. This could quickly deplete the battery. The battery may run flat in minutes to a few hours, depending on how much charge was left in the battery and how old it is. The engineering on older diesel engines is simpler, and there are fewer things that drain power from the battery. As a result, these automobiles with a damaged alternator's battery may be able to support the vehicle for longer. Many systems in modern gas-powered cars use power from the battery, which can cause the battery to drain faster if the alternator fails.3. Will a Bad Alternator Kill a New Battery?Yes, it is possible. So, before you replace the battery, get the alternator tested. A defective alternator, on the other hand, can quickly harm a new battery.4. How do you tell if it’s your alternator or your dead battery?Strange growling sounds, a burning odor, or alternating dimming and illumination of your headlights and interior light are all signs of a damaged alternator. The battery is most likely to blame if the automobile struggles to start or requires a jump start every time. It is advisable to seek the help of a qualified mechanic to analyze the problem and decide if it is caused by the battery or the alternator.5. Will an alternator charge a dead battery?Alternators aren't meant to recharge a dead battery; they're meant to keep it charged. Charging a dead battery with an alternator will cause the alternator to fail prematurely. When an alternator tries to charge a dead battery, it must operate at full capacity, yet due to the heat it produces, an alternator is only meant to operate at full capacity for brief periods of time. Before starting an alternator, it's always a good idea to charge a dead battery with a battery charger.6. Can I disconnect a battery with the engine running to test the alternator?It's not a good idea! You run the risk of frying all of your vehicle's electrical components. The voltage regulator instructs the alternator to produce maximum power as soon as the battery is disconnected. The alternator can produce up to 50 or 60 volts depending on engine RPMs when there is no battery in the circuit to act as a capacitor. When the dust settles, that "simple test" might cost you thousands of dollars in new gadgets. This is an extremely bad practice that will almost certainly harm the alternator or the vehicle.7. How can I prevent my alternator from failing in the future?You should include your alternator in your scheduled maintenance period to avoid it falling in the future. By keeping an eye out for any of these signs. You'll be able to tell when your alternator is about to fail. Also, testing your battery and alternator using your code reader, if it has that capability, will save you time.8. Will A Dead Battery Damage My Alternator?No, a dead battery will not inevitably cause alternator damage. Recharging the battery is one of the alternator's primary responsibilities. As a result, if you have a dead battery, you can fully charge it by driving for 30 minutes to two hours. If your battery does not hold a charge, it can cause your alternator to wear out prematurely.9. Is it possible to jumpstart a car with a bad alternator?Yes, but it is dangerous. The issue with jumping a car with a damaged alternator is that the automobile's electrical system is powered by alternating current. If your alternator isn't working properly, your battery may not be sufficiently charged when you start your engine, which might have disastrous effects.10. How Much Does A New Car Battery Cost?A new automobile battery ranges in price from $50 to $250, depending on the manufacturer and whether it is a premium battery or not. Some high-end vehicles require special batteries that can only be obtained through the dealer and can cost up to ten times the price of a standard battery. So, to avoid entirely depleting your bank account, treat such vehicles with extreme caution.11. How Much Does A New Alternator Cost?A replacement alternator typically costs between $300 and $2,000, though this can vary substantially depending on a variety of factors. Labor prices vary widely depending on how accessible the alternator is and how much effort is required to replace one. In any case, it's always a good idea to utilize original parts when it comes to important car components, as it's never a good idea to scrimp on these.12. How much does it cost to replace alternator?When your automobile begins to have electrical troubles, it's a sign that your alternator needs to be replaced. When you factor in the cost of a new alternator as well as labor, you should budget between $500 and $1,000 to replace your vehicle's alternator.13. Is It Worth Tt Fixing A Broken Alternator?An alternator is expensive, but it is always best to replace it if it begins to cause serious problems. If you opt to repair it, be in mind that the repair may not stay long. This procedure is also known as "remanning" the alternator, and it consists of removing worn-out and damaged alternator components and replacing them with newer ones.14. How Do I Know Which Battery To Buy For My Car?It's usually a good idea to consult the owner's handbook, but you may also seek information on your previous battery if you still have it, or contact the dealer. Another option is to look for it online, as most car-enthusiast forums offer a wealth of information about which battery is ideal for your vehicle and where you can obtain it at the greatest price.15. Do I need a new battery after replacing alternator?This implies that in most circumstances, no additional labor is required, and you will only need to pay for a new drive belt, which is not particularly expensive. Is it necessary to replace the battery whenever the alternator is replaced? It is not required, but it is fairly uncommon for an old battery to fail when an alternator fails.16. Is it safe to drive with a bad alternator?If you jump-start appropriately, there should be no damage to the donor or recipient's automobile, and it is typically safe to do so, but driving a car with a damaged alternator offers a risk, especially if you have a newer car. Everything in your automobile, including the lights, AC, radio, and so on, is powered by the alternator.17. Why is my new alternator not charging my new battery?The most obvious reason your battery won't charge even though your alternator is brand new is that the fault is with the battery itself. If you're not sure, you can check the current flowing from your battery with a multimeter or a voltmeter.18. How long will a car run without alternator?For those unhappy people who discover that this crucial component of the vehicle is malfunctioning, how long will a car run without an alternator and what can you do to extend the vehicle's ability to function? Without this vital component, your car will only run for up to two hours and as little as five minutes.19. How far can I drive with a dead alternator?You should be fine as long as you don't have any accessories running. Check that your battery is completely charged. My box truck's alternator has failed. I made it 25 miles (about an hour ofdriving time) with a half-charged battery, running the headlights and starting it about 5 times before the battery died.20. Do alternators fail suddenly?The alternator is a critical component in the operation of your vehicle's electrical systems. When your alternator begins to fail, it can create a range of electrical difficulties in your vehicle, eventually leading to a breakdown. Alternators can fail suddenly or gradually over time.Final ThoughtsA faulty alternator is an unwelcome news. This is a challenging condition to diagnose if you are not a mechanic. However, if you've had your battery checked and are quite certain it's not a battery problem, take your car to a mechanic to be properly examined.If your automobile won't start normally, you most likely have a problem with your battery or alternator.  The indicators above can help you determine if a bad alternator vs a bad battery. However, if you're still unclear about recognizing the symptoms of a broken alternator or a dead battery, it doesn't hurt to get your vehicle inspected by an expert who can assist you. While having automotive problems is inconvenient, you want to be safe on the road. To do so, make sure you have adequate auto insurance coverage.To be cautious, have your car inspected if you suspect a problem. It may cost you a little money upfront, but it will save you money in the long term. So, if you have alternator or battery problems, get them addressed as soon as possible to avoid more problems. 

CatalogIntroductionⅠ What is AG10 battery?Ⅱ AG10 Battery Specifications and FeaturesⅢ 4 Facts You Need to Know About the AG10 Battery3.1 AG10 Battery is Non-Rechargeable3.2 AG10 Battery is Stable3.3 Alkaline Button AG10 Batteries Have a Long Lifespan3.4 The AG10 Battery is Small and Portable3.5 The AG10 Alkaline Button Cell Has Several Replacement OptionsⅣ AG10 Battery ApplicationsⅤ Battery Analogs AG10Ⅵ Popular AG10 Battery Manufacturers and their FeaturesⅦ How to Choose the Best Ag10 BatteryⅧ What to Look For When PurchasingⅨ AG10 VS LR44Ⅹ AG10 Battery Equivalents and replacements10.1 AG10 battery equivalent: LR1130 battery10.2 AG10 battery equivalent: L1131 battery10.3 AG10 battery equivalent: LR54 batteryⅪ Is the AG10 button battery the same as the AG13?Ⅻ FAQ1. Is 1216 and 1220 battery equivalent?2. Is LR1130 the same as AG10?3. Are AG10 and AG13 batteries the same?4. How much does an Ag10 button battery cost?5. What are the dimensions of the lr1130/ag10 battery?6. What size wholesale order of Ag10 coin cells do you offer?7. What Energizer battery is equivalent to AG10?8. What Duracell battery replaces AG10?9. Is ag10 the same as lr1130?10. Is an AG10 button cell battery the same as a VG10A alkaline button battery?11. What exactly does AG10 stand for?12. Is there a difference between LR54 and AG10?13. How long does a rechargeable battery last?14. Is AG10 battery the equivalent of an LR54 battery?15. Is the LR1130 battery the equivalent of the AG10 battery?IntroductionThe AG10 battery is a tiny, non-rechargeable coin/button battery. Watch batteries, calculators, toys, and automobile keys are all powered by AG10 batteries. LR54, LR1130, L1131, and G10 batteries are all AG10 equivalents. Many brands sell LR1130/AG10 batteries, however, they are labeled differently, leaving users confused about whether the battery is an LR1130/AG10.G10-A battery, 1.5V Button Cell (AG10, SG10, LR54, SR54, LR1130, SR1130)Ⅰ What is AG10 battery?The AG10 Battery is a button-shaped alkaline battery with a nominal voltage of 1.5 that is commonly used in small electrical devices. It is a typical Alkaline button cell battery found in cameras, calculators, toys, and watches.Ⅱ AG10 Battery Specifications and FeaturesFeatureKey InformationDesignated nameAG10CompositionZinc/ Manganese dioxide alkaline chemistry 70mAhVoltage1.5 VAppearanceTablet disc-shaped button cellHeight3.1mmDiameter11.6mmWeight1gramResistance15KΩDischargeContinuousOptimum Temperature21 degrees celsiusAnaloguesLR54, LR1130, L1131, V389, D390, GP89AHere’s what you need to know about AG10, 1.5V alkaline button batteries. Ⅲ 4 Facts You Need to Know About the AG10 Battery3.1 AG10 Battery is Non-RechargeableThe alkaline chemistry of a non-rechargeable main cell is used in the AG10. It functions by utilizing the reaction between the cell's two electrodes, zinc and manganese dioxide (MnO2).The electrolyte is a metal salt known as potassium hydroxide.So, what's the deal with it not being rechargeable?It all boils down to the chemistry of the chemical reaction. To recharge a battery, the chemical interactions in the cell must be entirely reversible.That is, the reaction's product must be broken down into the identical substances from which it was generated.If A+B = C, then C must be broken down to generate A and B in the reverse reaction.However, with this sort of alkaline battery, the zinc/manganese dioxide reaction that generates the cell's chemical energy can only be reversed before the battery achieves 40% discharge.After the first 40%, the process gets more difficult and irreversible. This is due to the fact that the generated hydrogen ions (H+) will link with the Manganese oxide (MnO2) to form a non-reversible chemical known as groutite (MnOOH).There is no method to restore the charge of the alkaline battery since groutite cannot be broken down into MnO2 even after the Hydrogen ions are gone.If you try to recharge it, there is a chance that the cells will explode due to the amount of gas that will accumulate inside the seal.3.2 AG10 Battery is StableAG10 batteries have a nominal voltage of 1.5 volts and discharge at a constant pace with a wide cut-off range. Have: During the discharge, they have:A continuous power output of around 1.1 to 1.3 volts from a closed-circuit loaded circuit.A cut-off voltage of approximately 0.8 to 0.9 volts.Furthermore, the batteries have a capacity of 70mAh, which means they can provide 70 milliamperes of electricity for one hour.The charge is sufficient to run your little electronics for an extended period of time. Most of these little devices have an energy capacity of 1–5 milliamperes, therefore 70mAh will normally last a long time.The actual battery life will be determined by how much power is used by the various gadgets as well as the operating temperature.Note that AG10 alkaline button batteries can be used in temperatures ranging from -10 to 60 degrees Celsius. However, the ideal temperature for ensuring a longer life is around 21–22 degrees Celsius.3.3 Alkaline Button AG10 Batteries Have a Long LifespanThe potassium hydroxide electrolyte does not participate in the process. Because it is unused, the battery can retain the same power output for a longer period.Furthermore, the self-discharge rate of these alkaline button AG10s is slow. They can be stored for up to three years if kept at the proper temperature. After then, they will continue to produce the same power output when used.Keep in mind that the ideal temperature for storing these batteries is between 10 and 25 degrees Celsius. A storage temperature of above 30 degrees Celsius will disrupt the chemical reactions and destroy the casing, resulting in leaks.3.4 The AG10 Battery is Small and PortableThe AG10 alkaline button batteries are compact and disc-shaped, like small buttons, hence the name. They are 11.6 mm by 3.1 mm in size and weigh about 1 gram.They can be utilized on small and miniature gadgets such as calculators, toys, and watches due to their small size and low weight.They are so light that utilizing them in a series in a device does not affect the weight of the device. Because of their size and weight, they are also easily portable and appropriate for travel or outdoor excursions.These alkaline button cell batteries are a choking hazard for children under the age of three. So make every effort to keep the ones you haven't used in their original blister pack. Also, keep them out of the reach of small children.Also, double-check that the screw on the battery compartment is tightly shut and secure.3.5 The AG10 Alkaline Button Cell Has Several Replacement OptionsIf you are unable to obtain AG10s for any reason, you can turn to a variety of additional replacement options with similar content and size.The table below summarizes some of the most common AG10 1.5V replacement alternatives.Battery designationCommon BrandKA54Kodak189EnergizerL1130SonyLR1130MaxellLR1131PKCellD389/D390DuracellGP89AEnergizerV10GAVartaLR54VartaRW89RayovacOther compositions may potentially be used to replace AG10s. Higher capacity silver oxide batteries, such as the 389 or SR1130, are available. Ⅳ AG10 Battery Applications The AG10 battery is suitable for usage in the following devices: children's toys. Hearing aids. Clock. Radios. Because this sort of power source has low self-discharge, it can be utilized in devices that are rarely used for numerous years.Ⅴ Battery Analogs AG10 The AG10 battery is one of the most often seen batteries on store shelves. If the original model cannot be obtained for whatever reason, the following equivalents can be used in its place: 389, 390, G10, SR1130W, LR1130, Lr54, 389, 390W, 389, 390W, 389, 390W, 389, 390W, 3 The power sources provided are suitable not only in terms of shape but also in terms of all electrical properties.Ⅵ Popular AG10 Battery Manufacturers and their Features Because there are so many AG10 battery manufacturers on the market, it can be tough to choose. This process can be substantially accelerated if you instantly favor a company that has exclusively established itself on the positive side.The following AG10 battery manufacturers are now the most popular:Camelion. This manufacturer's alkaline tablet has higher capacity and resistance to stress during operation. The product costs substantially more than equivalents, but given the improved battery life, the expense of purchasing this battery will be totally justified, because regular salt batteries require at least 5 pcs to equal the capacity of this battery.Varta. One of the most dependable battery producers. Products have little self-discharge, therefore you can buy a package of ten elements right now. In terms of capacitance and voltage, these Varta battery indications are completely consistent with the nominal value.Space. This indigenous battery manufacturer's products are reasonably priced and of high quality. You won't have to worry about the longevity of your electronic equipment if you buy an AG10 battery from this manufacturer. This battery's capacity is comparable to the best overseas samples.Minamoto. AG10 batteries from a Chinese electrical products producer have commendable qualities, allowing you to safely install minamoto elements in any electrical device that requires a battery of this sort.Robiton  Domestic electrical goods maker whose products are not inferior in quality to the best overseas samples. This manufacturer's AG battery is distinguished by its extended endurance, making it perfect for use in children's toys.Ⅶ How to Choose the Best Ag10 BatterySo you've decided on the Ag10 Battery from Amazon. Making the final decision to Add to Cart might be difficult because there are so many sellers and options to choose from. However, you can choose the best product based on several aspects, including:PriceBecause the price is a deciding element for most products, it will have a considerable impact on whatever Ag10 Battery you choose. Some dealers would price their Ag10 Battery differently due to factors such as shipping fees, taxes, and so on. Amazon has fantastic savings on things when you buy them in bundles, so look through many sellers to discover the best bargain for you.BrandThe brand is another important consideration when purchasing Ag10 Battery. Well-known brands for Ag10 Battery will almost certainly be more expensive than lesser-known names, but this is because the quality of their product is well-known and dependable. Depending on the product, the brand might make a significant impact in terms of longevity, efficiency, and quality.FunctionBefore you decide on a thing, you should consider why you're purchasing it in the first place. Answering this question will provide you with more information that will assist you in selecting the finest Ag10 Battery for you. If it's a one-time use product, you may not want to pay as much as if it's a product you'll use every day for a long time.Old Customer ReviewsTo minimize disappointment after making a purchase, read the reviews section to see how previous buyers felt about their purchase. A product with a high number of positive reviews is likely to be of high quality. However, the contrary is true. If the majority of purchasers complained about their goods or rated them less than three stars, you should reconsider purchasing from that seller. Remember that one or two disgruntled customers compared to hundreds of favorable evaluations do not necessarily rule out a product as terrible.Pros and Cons of the productIt is also critical that you grasp the benefits and drawbacks of a product before purchasing it. Knowing the drawbacks ahead of time will avoid you from being disappointed when you receive the product. To acquire the best ratings, read other people's reviews online and ask around on social media for people who've used the Ag10 Battery before.ServiceIt is also important to consider how long you intend to use Ag10 Battery. Check the product description to learn how long the Ag10 Battery will last at full capacity and whether you will need to repair or replace it later. Compare this period and consider if it is worthwhile to purchase it or whether you can obtain a more expensive one that will last for a longer-term.WarrantyFinally, getting an Ag10 Battery with a warranty is always preferable because it ensures that the seller or Amazon will accept responsibility if any damage occurs during shipping. You can also examine if they accept returns if you receive the incorrect purchase or if it is damaged or broken when it is delivered to you.Ⅷ What to Look For When Purchasing First and foremost, while selecting a new battery, you must select one with the same dimensions and power. Other varieties of disk batteries may resemble the AG10, thus this designation should be found on the device enclosure. Furthermore, marking can be seen on the product's container. Then you must consider the country in which the battery was manufactured. Because China imports a large number of low-quality products, products from this nation should be purchased only if no local or European products are available. You should also thoroughly inspect the box and product body for any damage. If dents, significant scratches, or abrasions are discovered, the transaction should be canceled.Ⅸ AG10 VS LR44Despite having the same diameter, the AG10 is thinner (approximately 3.1 mm vs. 5.4 mm for the LR44). As a result, the LR44 has a little higher capacity than the AG10.Consider the following if you're having problems determining which one you have: The AG10 has the thickness of two US/Canadian pennies or Euro cents; the LR44 has the thickness of three US quarters or Canadian toonies, and is slightly thicker than three Euro cents, and has the diameter of a pencil.An AG10 may fit in an LR44 device, but it will very certainly not make good contact. It will work if it fits, but only for a short time. An LR44 is unlikely to fit within a device. An LR44 will very certainly not fit in a device built for an AG10.Ⅹ AG10 Battery Equivalents and replacementsAG10, G10A389, 626, 189, 389, E389, 389A, 389E, 389X, V389, D389, GP189, GP389LR1130, LR54, LR1130S, LR1131, L1133, SR1131, LL1131SG10, SR54, SR1130W, SR1130PW, SR1130, LR1130, 189, , S1131E, SR1130SW, SB-BUG10, KA54, V10GA, RW89, RW89626, M BatteryAG10 and LR1130 labels, with dimensions of 11.6 mm by 3.1 mm, are the most commonly used for coin or button cells (0.567 x 0.1220 inches).As a result, AG10/LR1130 batteries are typically found in compact electronic gadgets that demand little power. The pricing of an alkaline AG10 is fairly reasonable.10.1 AG10 battery equivalent: LR1130 batteryAn AG10 battery is equivalent to an LR1130 battery. The LR1130/AG10 is a tiny, non-rechargeable button/coin battery that is widely used.Product Description for LR1130The LR1130 batteries are mercury-free and designed to provide steady power. Please dispose of batteries in an eco-friendly manner. Keep little children a safe distance away. These tiny button cell batteries can be found in a wide range of small electronic devices, including medical devices, key fobs, and LED keyring torches.ApparatusThe LR1130 battery is a coin-type power cell that has been utilized in a range of tiny goods by customers all over the world. This battery is currently commonly used in medical equipment including blood pressure monitors, ear thermometers, and medical thermometers, as well as numerous small electronics like laser pens, calculators, mini remote controls, vehicle keys, watches, and headlamps.Benefits of LR1130 batteries    The price-to-quality ratio is excellent.There is no mercury in this product.Specification for LR1130 batteryBattery Material AlkalineNominal Voltage 1.5V1mm in height00g in weightAlkaline Electrochemical System6mm in diameterBattery Type ButtonAlkaline cellular typeBattery Safety Issues with the LR1130Small, sparkling objects, such as LR1130/SR1130 batteries, may catch the interest of youngsters and dogs. While most modern batteries are free of lead, mercury, cadmium, and other heavy metals, they can still induce electrolytic reactions and burns to the body, which can be fatal if eaten. If an LR1130 or similar battery is ingested, contact the local emergency facility (or veterinarian) immediately. Explain what happened, and then follow their advice. As a result of these factors, coin/button cell batteries are now packaged in child- or pet-safe packaging.Dispose of all batteries safely, especially button ones that youngsters may find.10.2 AG10 battery equivalent: L1131 batteryThe L1131 battery is equivalent to the AG10 battery. The LR1131 is an alkaline button cell battery that is commonly seen in tiny electronic devices such as calculators.SpecificationDimensions: 11.6mm x 3.0mm approxAlkaline batteries Voltage: 1.5VBattery ApplicationsWe've put together a list of the most typical cases. Photographic equipment. Calculators. Wear a wristwatch. Medical supplies. MP3 players and voice recorders are a couple of examples. In children's toys as well as children's literature. Laser pointers, for example, are examples of miniature lighting fixtures.Knowing the major parameters, one can make an educated judgment as to where such batteries are used. In actuality, every device requiring such a voltage, as well as the battery compartment, has the same dimensions.Warnings and AlertsYou must install replacement L1131 batteries in the exact original configuration as they came out of the device they power, and you must reconnect the replacement batteries using your existing hardware and cables wherever possible.If your L1131 comes from a device that utilizes multiple batteries, make sure to change all of them at the same time, as mixing fresh and old ones will drastically shorten their longevity.10.3 AG10 battery equivalent: LR54 batteryAn AG10 battery is the same as an LR54 battery. The LR54/AG10 battery is a high-performance alkaline button cell.The AG10/LR54 is an alkaline button cell battery that is used in small electronic devices such as calculators and electronic games. 1.5V is the voltage.Because each manufacturer has a separate component numbering scheme, the LR54 button battery is also known as LR1130 189 AG10 G10A L1130 V10GA.These batteries are also known as 189, AG10, or V10GA batteries. According to the International Electrotechnical Commission, they are also known as LR1131. This LR54 battery has a capacity of 44-68mAh and measures 11.6mm in diameter and 3.1mm in height. It is capable of operating in temperatures ranging from -10 to 50 degrees Celsius.Each battery is built of a leak-proof material and has true voltage stability for further security. This battery is a low-cost substitute for similar-sized and-type batteries, giving your gadgets new life.The LR54 AG10 Button Cells are suitable for usage in a wide range of electronic devices such as toys, calculators, cameras, watches, and other electronic devices. Because of their tiny and lightweight form, they are easy to transport and store. Because of their long shelf life, these batteries can be purchased in large quantities and stored for years without losing any of their power.Ⅺ Is the AG10 button battery the same as the AG13?No, the AG13 has a little higher capacity than the AG10.These are silver oxide batteries (thus the "AG" suffix); alkaline alternatives are also available. The alkaline equivalent of the AG10 is LR54 or LR1131, while the alkaline equivalent of the AG13 is LR44 or LR1154. The "L" models are less expensive, but they don't last as long—the difference is insignificant.The diameter in millimeters is the first two digits, and the height in tenths of millimeters is the second two digits; the IEC designation is SR1131 for both the AG10 and SR1154 for the AG13; the first two digits are the diameter in millimeters and the following two digits are also the height in tenths of millimeters.The AG10/SR1131 is also known as SR54, while the AG13/SR1154 is known as SR44. SR54 and SR1154 are not the same things, which could be the source of your confusion.Although an AG10 may fit in an AG13 device, it is unlikely to make satisfactory contact. It will work if it fits, but only for a short time. It's unlikely that a device designed for an AG10 will fit an AG13.D390, D389, LR54, LR1131, L1131, LR1130, L1130, 390, 189, and 389 are other names for AG10 batteries.Ⅻ FAQ1. Is 1216 and 1220 battery equivalent?The main difference between CR1216, CR1220, and CR1225 batteries is their size, which affects their features and performance: - BR1216/CR1216 batteries have 12.5 x 1.6 mm physical dimensions, the least capacity (25 mAh), and drain currents that are extremely close to BR1220/CR1220 batteries.2. Is LR1130 the same as AG10?LR1130 is identical to LR54 or AG10. L denotes an Alkaline battery, R denotes a round battery, 11 denotes an 11.8mm diameter, and 30 denotes a 3.0mm height. I hope you found this information useful.3. Are AG10 and AG13 batteries the same?No, AG13 and AG10 are different batteries.4. How much does an Ag10 button battery cost?AG10 Button Batteries are also known as 389, 390, 189, L1130, LR1130, and L1131 and are available in bulk quantities. LR54 / AG10 Westinghouse Alkaline Button Batteries, Page 1 of 1 (2 Pack) $4.995. What are the dimensions of the lr1130/ag10 battery?The physical dimensions of the LR1130/AG10 battery are 11.6 x 3.1 mm (0.4567 x 0.1220 inches) and it has alkaline chemistry. The open-circuit voltage of LR1130/AG10 batteries is 1.55-1.6 volts, with a nominal voltage of 1.5 volts and a cutoff voltage of 0.9 volts.6. What size wholesale order of Ag10 coin cells do you offer?There is no quantity of AG10 coin cells that is too huge for us to purchase in bulk. If you want, we can deliver them to you blister carded, suitable for retail display, or in bulk packaging. AG Button Batteries are available in sizes ranging from AG0 to AG13.7. What Energizer battery is equivalent to AG10?Equivalent Batteries: GP389, 389, V389, D389. LR54, SR54. SR1130W, SR1130, LR1130, SR1130SW.8. What Duracell battery replaces AG10?389 Battery is a direct replacement for SR1130W, SR54, SR1130, SB-BU, 280-15, M, V389, D389, 626, S1131E, GP389, AG10, AG-10, 389, 189, L1131, G10, V10GA, LR1130, GP189, LR54, SG10, A389, L1131, L1131C, L1131D RW89.9. Is ag10 the same as lr1130?The alkaline LR1130 can be replaced with the silver SR1130, which will give you a bit extra battery life because silver cells have a higher capacity. You can also utilize AG10 and LR54 kinds, which are nearly identical.10. Is an AG10 button cell battery the same as a VG10A alkaline button battery?AG10 and VG10A are interchangeable terms. Alkaline batteries used in small electronics such as watches and toys are given these two names.Both are the same size, measurements, and features. What one manufacturer refers to as AG10 is referred to as VG10A by another. As a result, the two names can be used interchangeably.11. What exactly does AG10 stand for?The AG10 batteries are little, disc-shaped batteries that look like small buttons. They are about 1 gram in weight. Because of their compact size and lightweight, they can be used on small and micro electronics such as watches, toys, and calculators.12. Is there a difference between LR54 and AG10?These batteries are also known as 189, AG10, or V10GA batteries. This LR54 battery measures 11.6mm in diameter and 3.1mm in height and has a capacity of 44-68mAh.13. How long does a rechargeable battery last?If properly maintained for and used, most rechargeable batteries should last 2-7 years. Rechargeable cordless phone batteries can last up to two years with proper care and maintenance.14. Is AG10 battery the equivalent of an LR54 battery?These batteries are also known as 189, AG10, or V10GA batteries. This LR54 battery measures 11.6mm in diameter and 3.1mm in height and has a capacity of 44-68mAh.15. Is the LR1130 battery the equivalent of the AG10 battery?LR1130 and LR54 or AG10 are the same thing. L stands for alkaline, R stands for round, 11 stands for 11.8mm diameter, and 30 stands for 3.0mm height.

Introduction As a power semiconductor device, IGBT(insulated-gate bipolar transistor) is widely used in the fields of rail transit, smart grid, industrial energy saving, electric vehicles and new energy equipment. It has the characteristics of energy saving, convenient installation and easy maintenance, and stable heat dissipation. It is the core device for energy conversion and transmission. A brief overview, IGBT can be said to be a combination of MOSFET(metal–oxide–semiconductor field-effect transistor) and BJT(bipolar junction transistor). That is, it combines the gate voltage control transistor (high input impedance) of the MOSFET, and uses the dual carriers of the BJT to achieve the purpose of large current (voltage-controlled bipolar device). So what is the internal structure of such a combination? This article will explain in detail with examples. What is IGBT and Its Applications Catalog Introduction Ⅰ IGBT Module Explained Ⅱ IGBT Internal Structure Ⅲ IGBT Internal Current Flow Ⅳ How to Disassemble IGBT Module? Ⅴ FAQ Ⅰ IGBT Module Explained The model of the IGBT module to be disassembled as an example is: FF1400R17IP4. The appearance and equivalent circuit of the module are shown in Figure 1. The length, width and height of this module are: 25cmx8.9cmx3.8cm. The module contains two IGBTs, which are what we often call half-bridge modules. The rated voltage and current of each IGBT are 1.7kV and 1.4kA. Figure 1. FF1400R17IP4 Part 8, 9, 10, 11, and 12 are power terminals and need to be connected to a power circuit.1, 2, 3, 4, and 5 are auxiliary control terminals, which need to be connected to the gate drive circuit.6 and 7 are NTC thermistors, used for temperature detection or over-temperature protection.After having a general understanding of its structure, what can we do with such a black module with this structure? Take an example around us: new electric vehicles, everyone should be familiar with it. Three such black modules can be used as a three-phase motor driver. If it is equipped with a battery, it can drive an electric bus. Of course, this module is also used in many other applications. Figure 2. IGBT in Electric Bus   Ⅱ IGBT Internal Structure After having a preliminary understanding of the external structure and application of the IGBT module, let us enter the subject of this article to see what the inside of this high-tech black module looks like. Figure 3 is the internal picture of the IGBT module with the black casing removed. It should be noted that the most common copper and aluminum are inside the IGBT module. Figure 3. IGBT Internal Structure Figure 4 is a cross-sectional view of the IGBT module. If the black casing and external connection terminals are removed, the IGBT module mainly contains 3 components, the heat dissipation substrate, the DBC substrate and the silicon chip (including the IGBT chip and the Diode chip), and the rest is mainly solder layers and interconnecting wires are used to connect IGBT chips, Diode chips, power terminals, control terminals and DBC(Direct Bond Copper). Below we will briefly introduce each part. Figure 4. IGBT Section View ① Heat Sink SubstrateThe bottom of the IGBT module is the heat dissipation substrate, the main purpose is to quickly transfer the heat generated by the IGBT switching process. Since copper has better thermal conductivity, the substrate is usually made of copper, and the thickness of it is 3-8mm. Of course, there are also substrates made of other materials, such as aluminum silicon carbide (AlSiC), both of which have their own advantages and disadvantages. ② DBCDBC (Direct Bond Copper) is a ceramic surface metallization technology, which contains 3 layers. Have a ceramic insulating layer in the middle and a copper clad layer above and below respectively, as shown in Figure 5(a). Simply put, it is to cover both sides of an insulating material with a copper layer, and then etch a pattern that can carry current on the front side, and the back side must be directly soldered to the heat sink substrate. Figure 5. BDC Base vs PCB The main function of DBC needs to ensure the electrical insulation capacity between the silicon chip and the heat dissipation substrate and good thermal conductivity, while also providing a certain current transmission capacity. The DBC substrate is similar to a 2-layer PCB circuit board. The insulating material in the middle of the PCB is generally FR4, while the commonly used ceramic insulating materials for DBC are aluminum oxide (Al2O3) and aluminum nitride (AlN).For the IGBT module analyzed in this article, there are 6 DBCs inside, and each has 4 IGBT chips and 2 Diode chips. Among them, 2 IGBT chips and 1 Diode chip are used as the upper tube, and the rest are used as the lower tube. As shown in Figure 6. Figure 6. DBC Diagram and Equivalent Circuit ③ IGBT ChipThe IGBT chip model used inside the module is: IGCT136T170. The manual can be downloaded from Infineon official website. Figure 7 shows the top view and basic parameters of the IGBT chip. The gate and emitter of the IGBT are above the chip (front side), and the collector is below (back side). The thickness of the chip is 200um. After the IGBT powers on, the current flows from bottom to top, so the IGBT of this structure can also be called a vertical device. Chip Type VCE ICn1) Die Size IGC136T170S8RH2 1700A 117.5A 17.72×7.7mm2 Figure 7. IGBT Chip Diagram If you make a vertical cut on the 200um chip, you can get the internal structure shown in Figure 8, which is a combination of P-type or N-type semiconductors with different doping. Figure 8 shows the well-known equivalent circuit of an IGBT, which is usually understood as a MOS-controlled PNP transistor. When start to learn about power electronics, you may feel that this picture is a bit strange. Why not draw the collector on the top and the emitter on the bottom? Until you understand that the IGBT current flows from bottom to top, it is not difficult to explain. Figure 8. IGBT Chip Structure and Equivalent Circuit Let’s have a general understanding of the electrical parameters of this IGBT chip. This chip can pass a DC current of 117.5A at 100°C. It can be seen from Figure 4 that a single IGBT device inside the module contains a total of 12 IGBT chips, so the total current is: 117.5*12=1412A, which is basically the same as the 1400A rated current in the IGBT module manual.In order to ensure the current sharing effect between IGBT chips, a 11.5Ω resistor has been integrated inside the gate of each chip. At the same time, considering the current sharing between the DBCs, the two chips on each DBC share a gate resistor externally, as shown in Figure 10. When measuring it with a multimeter, and the resistance is about 4.13Ω. You can calculate it in conjunction with Figure 9 to see if it is consistent with the 1.6Ω in the IGBT module manual. Of course, you can refer to the official manual for more detailed parameters of the IGBT chip. Figure 9. IGBT Equivalent Circuit ④ Diode ChipFigure 10 is a top view of the Diode chip, with the anode on the front and the cathode on the back. The current direction of the diode is from top to bottom, which is exactly the opposite of the current direction of the IGBT. The rated current of the diode chip is 235A, and each IGBT is composed of 6 diodes in parallel, and the total current can reach 1410A, which is basically the same as the 1400A in the module manual. The thickness of diode chip is the same as IGBT, it is also 200um. For more detailed parameters of the diode chip, please refer to the official manual. Chip Type VR IFn1) Die Size SIDC130D170H 1700A 235A 16.3×8mm2 Figure 10. Diode Diagram Such a thin semiconductor material can have kV voltage and hundreds of amperes of current on and off, it’s amazing. This is why the price of high-power semiconductor devices is so very expensive.The upper copper layer interconnection of IGBT chip, Diode chip and DBC is generally realized by bonding wires. Commonly used bonding wires are aluminum wire and copper wire. Among them, the aluminum wire bonding process is mature and the cost is low, but the electrical and thermodynamic properties of the aluminum wire bonding are poor, and the expansion coefficient mismatch is large, which affects the service life of the IGBT. The copper wire bonding process has the advantages of excellent electrical and thermodynamic properties, high reliability, and is suitable for modules with high power density and efficient heat dissipation.   Ⅲ IGBT Internal Current Flow After having a basic understanding of the internal structure of the IGBT module, let us go back and interconnect all the above components to see how the current flows inside the IGBT module. Here we take the upper tube IGBT in one of the DBCs as an example to illustrate the current flow. Red represents the current direction of the upper tube IGBT (S1 and S2), and blue represents the current direction of the diode D1. Figure 11(b) is a left cross-sectional view and a schematic diagram of the current direction of the module of Figure . Figure 11(a). IGBT Current Flow Figure 11(b). IGBT Current   Ⅳ How to Disassemble IGBT Module? Some friends may be curious about how to disassemble this module, but it is actually very simple. You only need to prepare two screwdrivers and a small hammer. Figure 12. IGBT Disassemble Step 1: Unscrew the 4 screws at the bottom of the IGBT module.Step 2: Use a flat-blade screwdriver to pry open all the terminals on the front of the IGBT module. This step is very important. It is necessary to ensure that all the terminals after being pried are vertical to the module substrate.Step 3: You need to fix the IGBT in one place, or use a flat-blade screwdriver to align any position of the connection between the plastic casing of the IGBT module and the substrate, hit the screwdriver with a hammer, and pry the casing from the substrate with the screwdriver. After prying open one position, place something on it, and then pry another position, repeat that, after slowly prying open, just pry open with your hands directly.   Ⅴ FAQ 1. What is IGBT module?An IGBT is a is power semiconductor die and is the short form of insulated-gate bipolar transistor. ... An IGBT power module functions as an electronic switching device. By alternate switching direct current (DC) can be transformed to alternating current (AC) and vice versa. 2. How does IGBT module work?The IGBT combines the simple gate-drive characteristics of power MOSFETs with the high-current and low-saturation-voltage capability of bipolar transistors. The IGBT combines an isolated-gate FET for the control input and a bipolar power transistor as a switch in a single device. 3. What is the purpose of IGBT?The IGBT combines, in a single device, a control input with a MOS structure and a bipolar power transistor that acts as an output switch. IGBTs are suitable for high-voltage, high-current applications. They are designed to drive high-power applications with a low-power input. 4. How many layers are there in IGBT?Working of IGBTIGBT is constructed with 4 layers of semiconductor sandwiched together. The layer closer to the collector is the p+ substrate layer above that is the n- layer, another p layer is kept closer to the emitter and inside the p layer, we have the n+ layers. 5. Which are the terminals of IGBT?The three terminals of IGBT are Gate, Collector and Emitter. 6. How many terminals Mosfet has?four terminalsThe MOSFET has four terminals: drain, source, gate, and body or substrate. 7. What is the function of injecting layer in IGBT?The p+ substrate is also called injector layer because it injects holes into n- layer. The n- layer is called drift region. The next p layer is called the body of IGBT. The n- layer in between the p+ & p region serves to accommodate the depletion layer of pn- junction i.e. J2. 8. Can I replace IGBT with MOSFET?Due to the higher usable current density of IGBTs, it can usually handle two to three times more current than a typical MOSFET it replaces. This means that a single IGBT device can replace multiple MOSFETs in parallel operation or any of the super-large single power MOSFETs that are available today. 9. What are the three terminals of an IGBT and how does it function?The IGBT (insulated gate bipolar transistor) is a three-terminal electronic component, and these terminals are termed as emitter (E), collector(C) and gate(G). Two of its terminals namely collector and emitter are associated with a conductance path and the remaining terminal 'G' is associated with its control. 10. What is an IGBT describe its construction?IGBT – Working, Types, Structure, Operation & Applications. ... The IGBT (Insulated Gate Bipolar Transistor) takes the best parts of both BJT and MOSFET into a single transistor. It takes the input characteristics (high input impedance) of MOSFET (Insulated Gate) and the output characteristics of BJT (Bipolar nature). 11. How does IGBT convert DC to AC?The IGBT act as a switch (when a signal is applied to the gate, they turn on and then turn off when the signal is removed). By closing Q1 and Q4, a positive d.c. supply is applied to the load. Q2 and Q3 will result in a negative d.c. supply across the load. 12. What is the advantage of IGBT?The main advantages of IGBT over a Power MOSFET and a BJT are: It has a very low on-state voltage drop due to conductivity modulation and has superior on-state current density. So smaller chip size is possible and the cost can be reduced. 13. What is drift layer in IGBT?The drift region (electric field or movement of charge) of the IGBT works as a base of the PNP transistor . The current gain of the transistor depends upon the width and doping level of the transistor. 14. What is the structure of IGBT?The structure of IGBT is very much similar to that of PMOSFET, except one layer known as injection layer which is p+ unlike n+ substrate in PMOSFET. This injection layer is the key to the superior characteristics of IGBT. Other layers are called the drift and the body region. The two junctions are labeled J1 and J2. 15. What are the advantages of IGBTs?Advantages of IGBT:Simple drive circuitLow on-resistanceHigh voltage capacityFast switching speedEasy of driveLow switching lossLow on stage power dissipationLow gate drive requirement 16. Why IGBT is very popular nowadays?With its lower on-state resistance and conduction losses as well as its ability to switch high voltages at high frequencies without damage makes the Insulated Gate Bipolar Transistor ideal for driving inductive loads such as coil windings, electromagnets and DC motors. 17. Why diode is used in IGBT?We know that MOSFET or IGBT is a unidirectional device, they only conduct current in forward bias and block the current in reverse bias. ... For this reason, an external diode is connected across the MOSFET or IGBT or SCR to provide a path for reverse current.

Executive Summary: 2026 UpdateNMOS (N-channel MOS) and PMOS (P-channel MOS) are the fundamental building blocks of modern CMOS technology used in processors and memory. As of 2026, the key distinction lies in their charge carriers: NMOS uses electrons (faster, smaller), while PMOS uses electron holes (slower, larger). Modern circuit design combines both to create low-power, high-speed logic gates. What is an NMOS Transistor?An NMOS (N-channel Metal-Oxide Semiconductor) transistor is a majority-carrier semiconductor device that uses electrons to conduct current between the source and drain when a positive voltage is applied to the gate. In 2026, NMOS remains the workhorse of digital logic due to the high mobility of electrons. These transistors serve as amplifiers, switches, or resistors in analog and mixed-signal integrated circuits (ICs).Key Characteristics:Charge Carrier: Electrons (High mobility).Activation: Conducts when Gate Voltage > Threshold Voltage (Logic 1).Application: Primary "pull-down" network in CMOS logic.NMOS Transistor SymbolWhat is a PMOS Transistor?The PMOS (P-channel Metal-Oxide Semiconductor) transistor operates inversely to the NMOS, using "holes" as charge carriers within an n-type substrate. While historically used independently, in modern architecture, PMOS is primarily paired with NMOS to form CMOS (Complementary MOS) circuits to minimize static power consumption.Key Characteristics:Charge Carrier: Holes (Lower mobility than electrons).Activation: Conducts when Gate Voltage is Low (Logic 0).Structure: P-type Source/Drain in an N-type body (N-well).PMOS Transistor Symbol How Does an NMOS Transistor Work?An NMOS transistor functions as a closed switch (ON) when receiving a high voltage (Logic 1) and an open switch (OFF) when receiving a low voltage (Logic 0).ON State (Logic 1 at Gate): When voltage is applied to the gate, it attracts electrons to the channel, creating a conductive path between the Source and Drain. Current flows.OFF State (0V at Gate): Without gate voltage, the path is broken. No current flows, effectively acting as an open wire. How Does a PMOS Transistor Work?A PMOS transistor operates with inverted logic compared to NMOS; it turns ON when the gate voltage is low and OFF when the gate voltage is high.ON State (0V at Gate): When the gate is grounded (Logic 0), holes accumulate in the channel, creating a "closed circuit" that allows current to flow from Source to Drain.OFF State (High Voltage at Gate): When positive voltage is applied, the channel is depleted of carriers, creating an "open circuit."In circuit diagrams, this inversion is represented by a "bubble" on the gate terminal. By combining PMOS (which passes logic 1 well) and NMOS (which passes logic 0 well), engineers create CMOS circuits, the standard for all modern computing processors from smartphones to servers.PMOS Transistor Operational Diagram NMOS Transistor Cross Section & StructureA typical 2026 NMOS transistor design (conceptually based on planar or FinFET structures) consists of a p-type silicon substrate sandwiched between two highly doped n-type regions (Source and Drain).The Body: The p-type body is typically grounded (0V).The Field Effect: As voltage at the Gate terminal rises, an electric field penetrates the oxide layer (Si-SiO2).Inversion Layer: This field repels holes and attracts electrons to the surface, creating an n-type "inversion layer" channel.Conduction: Once the voltage exceeds the Threshold Voltage (Vth), the transistor turns ON, allowing electrons to flow from Source to Drain.NMOS Transistor Cross SectionPMOS Transistor Cross Section & StructureThe PMOS structure is the physical inverse of the NMOS. It is constructed with an n-type body (or N-well) and two neighboring p-type semiconductor regions acting as Source and Drain.Operational Physics:The body is held at a positive voltage (VDD).When the Gate voltage is high (VDD), the PN junctions remain reverse-biased (OFF state).When the Gate voltage drops (towards 0V), positive charge carriers (holes) are drawn to the oxide interface. This creates a p-type channel, bridging the source and drain, turning the device ON.Note on Voltage Levels: While legacy TTL logic operated at 5V, modern 2026 processors use ultra-low voltages, typically between 0.6V and 1.2V, to reduce heat and power consumption in nanometer-scale transistors.Cross Section of PMOS Transistor CMOS Inverter: Combining NMOS and PMOSThe most fundamental digital circuit is the CMOS Inverter (NOT Gate). It perfectly demonstrates the synergy between the two transistor types by connecting a PMOS transistor to the voltage source (VDD) and an NMOS transistor to the ground (GND).CMOS Inverter CircuitLogic "0" Input (Low Voltage):PMOS (Top): Turns ON. Connects Output to VDD.NMOS (Bottom): Turns OFF. Disconnects Output from GND.Result: Output is High (Logic "1").Logic "1" Input (High Voltage):PMOS (Top): Turns OFF. Disconnects Output from VDD.NMOS (Bottom): Turns ON. Connects Output to GND.Result: Output is Low (Logic "0"). CMOS NAND Gate ArchitectureComplex logic like the NAND Gate relies on specific arrangements of these transistors. In a NAND gate, the output is Low (0) only if both inputs are High (1).CMOS NAND Gate CircuitTruth Table Analysis:Inputs A=0, B=0: Both PMOS turn ON (Parallel), Both NMOS turn OFF (Series). Output = 1.Inputs A=0, B=1: One PMOS is ON, One NMOS is OFF (breaking the path to ground). Output = 1.Inputs A=1, B=0: One PMOS is ON, One NMOS is OFF. Output = 1.Inputs A=1, B=1: Both PMOS turn OFF. Both NMOS turn ON, creating a path to Ground. Output = 0. I-V Characteristics of NMOSThe I-V characteristic curves define how the current (Ids) flows relative to the voltage applied.Linear Region (Ohmic): At low Drain-Source voltage (VDS), the transistor acts like a resistor controlled by the gate.Saturation Region: As VDS increases, the channel pinches off, and current becomes constant (ideal for amplification).I-V Curves: NMOS Transistor I-V Characteristics of PMOSThe PMOS I-V characteristics mirror the NMOS but operate with negative polarities (relative to the source). In modern digital analysis, we typically map the magnitude of current against voltage. Because hole mobility is approximately 2.5x lower than electron mobility, a PMOS transistor must be physically wider than an NMOS transistor to drive the same amount of current.I-V Curves: PMOS Transistor Key Differences: PMOS vs NMOS Comparison TableFeaturePMOS TransistorNMOS TransistorFull NameP-channel Metal-Oxide SemiconductorN-channel Metal-Oxide SemiconductorSource/Drain DopingP-type Regions (Boron doped)N-type Regions (Phosphorus/Arsenic doped)Substrate TypeN-type Substrate (or N-Well)P-type SubstrateCharge CarriersHoles (Slower mobility)Electrons (Higher mobility)Size EfficiencyLarger area required for same drive current.More compact; higher density.Switching SpeedSlower (due to hole mobility).Faster (due to electron mobility).Activation ConditionTurns ON with Logic 0 (Low Voltage).Turns ON with Logic 1 (High Voltage).Noise ImmunityGenerally higher noise immunity.Lower noise immunity compared to PMOS.Threshold VoltageNegative (Vth < 0)Positive (Vth > 0) ConclusionIn the landscape of 2026 electronics, the debate is rarely "PMOS vs. NMOS" but rather how to best integrate them into CMOS (Complementary MOS) architectures. While NMOS offers superior speed and density due to high electron mobility, PMOS is indispensable for creating non-dissipative logic gates that consume almost zero static power. Modern chip designs rely on symmetric operation where NMOS pulls signals down to ground and PMOS pulls signals up to VDD, ensuring robust, high-speed, and energy-efficient computation. Frequently Asked Questions (FAQ)What is the main difference between NMOS and PMOS?The primary difference is the charge carrier. NMOS uses electrons (negative charge) and turns ON with high voltage. PMOS uses holes (positive charge) and turns ON with low voltage. Physically, NMOS is built on a p-type substrate, while PMOS is built on an n-type substrate. Does PMOS have any advantages over NMOS?Yes. PMOS is essential for passing a "strong logic 1" (full VDD) without the voltage drop associated with NMOS pass transistors. Additionally, PMOS devices generally exhibit better immunity to electronic noise, which is critical in analog signal processing. Is NMOS preferred over CMOS?No, CMOS is universally preferred over pure NMOS logic. While individual NMOS transistors are faster, pure NMOS logic circuits consume power continuously even when idle (static power). CMOS combines NMOS and PMOS to eliminate static power consumption, drawing current only during switching, which is vital for modern battery-powered devices. Why are NMOS transistors smaller than PMOS?Electron mobility is roughly 2-3 times higher than hole mobility. To achieve the same current drive capability, a PMOS transistor must be made physically wider than its NMOS counterpart. Therefore, NMOS transistors are more area-efficient (smaller) on the silicon die. Why do we use PMOS if it is slower?We use PMOS to enable Complementary Logic (CMOS). Without PMOS, we cannot create circuits that have zero static power consumption. The "Pull-Up Network" in digital gates requires PMOS to actively pull the voltage to VDD when the input is low, ensuring distinct digital states and energy efficiency. { "@context": "https://schema.org", "@type": "Article", "headline": "NMOS vs PMOS Transistors: 2026 Comparison and Guide", "datePublished": "2023-02-09", "dateModified": "2026-01-05", "image": "https://www.apogeeweb.net/upload/pdf/20230209/NMOS Transistor Symbol.jpg", "author": { "@type": "Organization", "name": "ApogeeWeb" }, "description": "A comprehensive guide to NMOS and PMOS transistors, their working principles, cross-sections, and how they combine to form CMOS logic.", "mainEntity": { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is the main difference between NMOS and PMOS?", "acceptedAnswer": { "@type": "Answer", "text": "The primary difference is the charge carrier. NMOS uses electrons and turns ON with high voltage. PMOS uses holes and turns ON with low voltage." } }, { "@type": "Question", "name": "Does PMOS have any advantages over NMOS?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. PMOS is essential for passing a strong logic 1 (full VDD) and generally exhibits better immunity to electronic noise." } }, { "@type": "Question", "name": "Is NMOS preferred over CMOS?", "acceptedAnswer": { "@type": "Answer", "text": "No, CMOS is preferred. CMOS combines NMOS and PMOS to eliminate static power consumption, whereas pure NMOS logic consumes power continuously." } }, { "@type": "Question", "name": "Why are NMOS transistors smaller than PMOS?", "acceptedAnswer": { "@type": "Answer", "text": "Because electron mobility is higher than hole mobility, NMOS transistors can drive the same current with a smaller physical width compared to PMOS." } }, { "@type": "Question", "name": "Why do we use PMOS if it is slower?", "acceptedAnswer": { "@type": "Answer", "text": "PMOS is required to build the 'Pull-Up Network' in CMOS circuits, allowing for distinct digital states with near-zero static power consumption." } } ] }}

CatalogIntroductionⅠ What is a Hot Swap PCB?Ⅱ Custom Keyboard - Hotswap vs. Solderable PCB    2.1 Advantages of Hotswap PCB    2.2 Disadvantages of Hotswap PCB    2.3 Advantages of Solderable PCB    2.4 Disadvantages of Solderable PCBⅢ What Is a Hotswap Mechanical Keyboard?Ⅳ Why are so few hotswap keyboards available?Ⅴ How to Make Hot-Swappable Mechanical keyboard PCB?Ⅵ Relevant Information about "Hot Swap PCB"IntroductionWhen building a custom mechanical keyboard, one of the most contentious decisions is whether to use a hotswap PCB or a solderable PCB. Is one superior to the other? This article will go over the specifics of the hot swap PCB.Ⅰ What is a Hot Swap PCB?The need to solder on switches is one of the most intimidating obstacles for people looking to build a mechanical keyboard. Hot swap PCBs, on the other hand, come to the rescue! A printed circuit board, or PCB, is the brain of your keyboard.There are two ways to connect your mechanical switches to the PCB to register inputs.1.SOLDER PCBSoldering necessitates the use of a soldering tool and solder, a low-melting metal alloy. This method entails inserting the pins of a switch through holes in your PCB and then melting the solder to connect the two. This secures the switch and creates a connection between the PCB and the switch's metal pins. When you press the switch, the signal can now transfer, register as an input, and eventually, trigger an action on your computer.Before attempting to complete this process properly, some research is required. You risk burning the solder, destroying the socket on your PCB, or messing up the switch's pins. Soldering may appear intimidating, but observing video tutorials and practicing with other objects will teach you how to do it correctly and safely.2. HOT SWAP PCBThe second, and far more straightforward method, is to install your switches using a hot swap PCB. You push your switch's pins into pre-installed sockets rather than using a soldering tool and solder. Hot swapping is similar to installing PC components  or Legos; you simply plug and play. It is quick, requires no training, and allows you to easily swap out switches.Glorious Modular Mechanical Keyboards (GMMK) all use hot swap PCBs.  making them the ideal choice for those looking for a simple, intuitive, and customizable keyboard experience.When installing switches into a hot-swap PCB, a softer surface to push against is recommended. Lining up your switch with the socket requires precision, so a softer surface reduces the possibility of bent pins. Furthermore, when removing switches, you should be gentle on the board. Ripping out a switch could result in catastrophic harm to the hot-swap socket.Note: A solder PCB  can be converted to a hot-swap PCB, but this still necessitates the use of a soldering tool. Furthermore, it is not a simple procedure that we recommend for beginners. Ⅱ Custom Keyboard  - Hotswap vs. Solderable PCB  When building a custom mechanical keyboard, one of the most contentious decisions is whether to use a hot swap PCB or a solderable PCB. Is one superior to the other?To that end, we will discuss the benefits and drawbacks of the two PCB options. The short answer is that there is no "better" PCB – it all comes down to personal preference, which is what defines the custom keyboard hobby.2.1 Advantages of Hotswap PCB  The most significant advantage of using a hotswap PCB  is the ease of switch installation, making it ideal for beginners. Simply ensure that the two pins of a switch are straight, install it to the PCB, and you're ready to go! You are not required to solder each individual switch to the PCB.Another reason why a hotswap PCB  is ideal for newcomers to the pastime is that it allows them to experiment with different switches in real-time. When you're new to the hobby, it's essential to figure out what kind of switch you like and don't like, and a hotswap PCB  makes this stage of...discovery easier.Aside from that, a hotswap PCB  simplifies keyboard tuning and maintenance. Assume you've been using your keyboard for a couple of years and you need to re-lube your switches – yes, you do need to re-lube your switches after some time.With a hotswap PCB.  you can simply remove the switches from your keyboard without having to desolder them.Tuning your stabilizers with a hotswap PCB is also not as difficult, assuming you use screw-in stabilizers. The issue is that you usually have to completely disassemble your keyboard to get to the screw-in stabilizers. Every component attached to the PCB, including the switches and plate, must be removed.While you may have fine-tuned your stabilizers during assembly, they may begin to tick later on. To be sure, you can inject lube directly into the stabilizer housing to try to solve the problem, but this doesn't always work – in my experience, it usually doesn't.2.2 Disadvantages of Hotswap PCB  You're stuck with only one layout if you use a hotswap PCB right away. Of course, some keyboards, such as the Ikki68 Aurora, provide slightly more layout options, but they still fall short of the sheer flexibility of a solderable PCB in this regard. Furthermore, you cannot use a hotswap PCB for half-plate builds. Because the switches are not as "attached" to the PCB as soldered switches are, using a half plate with a hotswap  PCB is not recommended.A half plate, as the name implies, does not cover the alphas on a keyboard. If you use a hotswap PCB with such a plate, the switches in the alphas portion are basically "suspended" without any support from the plate – this can damage a hotswap PCB,  2.3 Advantages of Solderable PCBAs previously stated, a solderable PCB allows you to design your own layout with almost no restrictions. Do you prefer a longer 7u spacebar over a 6.25u spacebar? That's fine. Would you rather have a split backspace than a full backspace? Done.A half plate with a solderable PCB, on the other hand, will provide a softer typing experience. You are typing directly on the PCB because the alphas portion of a half plate is exposed. You'll get a softer, less harsh typing experience if the PCB has flex cuts – a hotswap PCB doesn't have this kind of flexibility.Aside from that, a solderable PCB is less expensive than a hotswap PCB. The price difference isn't particularly significant – about $10 more in most cases – but it's worth noting. However, that is not the entire picture; I'll discuss this further in the following section.2.4 Disadvantages of Solderable PCBEven though a solderable PCB is less expensive than a hotswap PCB. It requires more tools to assemble, such as a soldering iron and desoldering tools. Depending on whether you already have such items, these do increase the "cost of ownership" of a solderable PCB.Assembling a keyboard with a solderable PCB requires more work because each individual switch must be soldered to the PCB. You may even damage the PCB during the assembly process if you are inexperienced with a soldering iron.The inability to easily swap out switches is, in my opinion, the most significant disadvantage of a solderable PCB. This makes a variety of keyboard maintenance tasks more difficult, such as stabilizer tuning, switch relubrication, and troubleshooting any keyboard problems.That's it. You may prefer a hotswap or solderable PCB depending on your preferences. Personally, I always use a hotswap PCB for ease of installation, even if it means I can only do a single layout or a half plate build.In addition, I review keyboard switches  on a regular basis; having a hotswap PCB makes this process much easier.Ⅲ What Is a Hotswap Mechanical Keyboard  ?Hotswap = changing switches without solderingHotswap (also known as hot-swap or hot swap) is a popular feature that Kono Store and Input Club were early adopters of. It refers to keyboards that allow for switch replacement without the use of solder. Kaihua (Kailh), a leading switch manufacturer in China, developed the market-leading hotswap  socket design shown below.How can that get confusing?Many websites state that hotswap keyboards have "hotswap switches," which is rarely the case and can lead to minor confusion. Cherry MX-style hotswap keyboard switches can be used in keyboards with the same hotswap socket pinout/plate design, but they were not designed for hotswap use. These switches can even be soldered into a conventional keyboard. The true innovation is found on the PCB (Printed Circuit Board) or, in the case of actual hotswap switches such as our contactless SILO / Keystone line, in the underlying technology.Ⅳ Why are so few hotswap keyboards available?The most significant reason is a reduction in profit — both long and short term. Hotswap sockets are slightly more expensive per keyboard. Most mass-market keyboards are generated in batches of several thousand or more, so manufacturers don't like the extra cost eating into their profit. They also make repairs very simple; when switches wear out, people are much less likely to purchase a new keyboard rather than repairing it themselves.Implementing hotswap sockets also necessitates some engineering expertise. They take up extra space on the PCB, requiring precise component placement and routing. This limits international layout support at the PCB level, which is especially important if a keyboard includes LEDs. Separate PCB designs are usually required if you want a European enter key or a split space bar in a hotswap keyboard. By reducing LED functionality, keyboards such as the Minivan, which is no longer accessible, achieve partial all-in-one success.Ⅴ How to Make Hot-Swappable Mechanical keyboard PCB  ?Hot-Swappable Sockets for DIY Mechanical Keyboard  With a hot-swappable mechanical keyboard, you can replace switches and LEDs on the fly without soldering or even turning off the keyboard. In this short video tutorial, I demonstrate how to make any printed circuit board for a mechanical keyboard hot-swappable by including footprints for Cherry MX plate switches. Other manufacturers' switches, such as Gateron and Kaihl, are compatible with the Cherry MX switches, making this a universal solution.Required HardwareSuitable printed circuit board (for example for ANAVI Macro Pad 8 maker kit)Switches made of metal3mm LEDs are optional, depending on the type of PCB and switches.KeycapsTE Connectivity / AMP 8134-HC-8P2 Holtite sockets for mechanical switches and TE Connectivity / AMP 8134-HC-5P2 Holtite sockets for 3mm LEDsTweezers, cutters and soldering irons are required tools.Holtite sockets for hot-swap  Step 1Insert the holtite sockets  into the PCB with tweezers . Because the sockets are small, take care not to lose any of them. Switch on the soldering iron. Warm each socket and push it gently. So we're using a soldering iron, but not for soldering. We're just using its heat to mount the sockets.It appears to be simpler than it is. It took some time for me to do it for all of the switches and LEDs. Each key has two holes for the switch and two holes for the LED, so you'll need four sockets of the appropriate size for each key.Step 2The following step is optional and only applies to the ANAVI Macro Pad 8 . The maker kit includes a WS2812B addressable LED strip that should be soldered to the back of the keyboard's side. Please take note of the arrow indicating the direction of the LED strip and ensure you place it correctly as shown in the video.Step 3Cut the legs of the 3mm LEDs  to ensure a good fit in the hot-swappable holtite sockets we've already installed.Step 4Put the switches, LEDs, and keycaps together. After you've completed step 1, this is a simple process since you already get a hot-swappable printed circuit board  for the mechanical keyboard.ANAVI Macro Pad 8 customized with blue Cherry MX switches and green 3mm LEDs for backlightingThe Gateron red switches, red LEDs, and white translucent keycaps that come standard with the ANAVI Macro Pad 8 are standard. In this case, however, I'm experimenting with blue Cherry MX switches, green LEDs, and dark translucent keycaps in the hot-swappable version. I bought a variety of mechanical switches, including Gateron Red, Cherry MX Blue , and Cherry MX Brown. Please keep in mind that the 3mm LED slots on the Cherry MX brown switches in the video are not present.The same method of using holtite sockets can be used on any other mechanical keyboard PCB  with a footprint for Cherry MX switches.Ⅵ Relevant Information about "Hot Swap PCB"1. Are hot-swappable PCBS good?If you're new to mechanical keyboards and not looking to learn how to solder, we recommend a PCB with hot-swap sockets as they are the most beginner friendly.2. Are solder switches hard?Soldering isn't difficult, especially with good tools, but it's still a skill which must be learned and it just doesn't make sense to risk a prized keyboard while you're learning. There are many posts here from folks who have damaged a keyboard with their first soldering attempt and looking for advice on how to fix it.3. What does a soldered PCB mean?PCB soldering is another term for the process of soldering electrical circuit boards. ... As the soldering iron melts this metal, it is then used a bit like glue to stick to pieces together. As the solder metal cools, it will re-harden into one large shape that connects the two parts.4. Can you put 3 pin switches in a 5 pin PCB?There are holes for 5-pin (PCB mount) switches, but 3-pin switches work just fine here since the plate is fastened to the PCB - alignment and stability won't be an issue. This PCB uses good quality Kailh hotswap sockets.5. Does PCB affect sound keyboard?Re: How does the PCB affect the sound of the keyboard? PCB will have minimal effect, despite being connected, it's a soft material and the plate tends to take the actual impact regardless of mount. The plate will change the sound of the ping, but more importantly it can and usually does amplify it.6. What temperature should I solder PCB?600°- 650°F (316°- 343°C) is a good place to start for lead-based solder and 650°- 700°F (343°- 371°C) for lead-free solder. You want the tip hot enough to melt the solder efficiency, but excess heat can damage components as the heat travels along the leads, and it will reduce the lifespan of the soldering tip.7. What are types of PCB?Common Types of Printed Circuit BoardsSingle Layer PCB. Single layer printed circuit boards are among some of the simplest to design and manufacture. ...Double Layer PCB. ...Multi-Layer PCB. ...High Density Interconnect (HDI) PCB. ...High Frequency PCB.8. Is Ducky hot-swappable?All standard Ducky One 3 mechanical keyboards are hot-swappable and feature Kailh's hot-swap sockets. Colored in a vibrant yellow, Kailh sockets are chosen for their impressive reliability.9. Do hot swap keyboards need soldering?All you need to do is just ensure that the two pins of a switch are straight, install it to the PCB, and…you're good to go! You don't have to go through the trouble of soldering each individual switch to the PCB. ... Other than that, a hotswap PCB makes keyboard tuning and maintenance much, much easier as well.