What are the common faults in induction cooker? What is the voltage of the main detection point?
IGBT features:1., the current density is large, is MOSFET dozens of times.2., high input impedance, low gate drive power, simple drive circuit.3. low on resistance. At the given chip size and BVceo, the turn-on resistance Rce (on) is no greater than 10% of the Rds (on) of MOSFET.
IGBT insulated gate switch for power control tube;These machines feature no double power trigger, only +5V and +12V, and LM339 drives IGBT by triggering the integrated block TA8316In this case, only this kind of pipe can be used instead of the pipe. The damage degree is approximately the same. Only the pipe is broken and replaced. The second is the bridge rectifier fail at the same time, (usually in the second half, burning) is the trigger integrated block TA8316 bad, and the LM339N damage is rare.For the high voltage module, because this parameter manual is very few, I hope you can collect and paste it for reference.Can not be rashly replaced, it is best to have an oscilloscope to measure its G pole waveform and amplitude (no, then use the multimeter to measure this point, DC voltage should be between 1-2.5 volts change)2.1.2 IGBTIusulated Gate Bipolar Transistor (IGBT) is a kind of high voltage, high speed and high power device with the advantages of BJT, high current density and MOSFET voltage controlled field controlled device.IGBT is currently available in different materials and processes, but they can all be considered as a MOSFET input, followed by a bipolar transistor magnifying composite structure.IGBT has three electrodes (see above), called gate G (also called control gate or gate), collector C (also known as drain) and emitter E (also called source).
The trigger part is composed of two sets of power tubes with positive and negative, PNPNPN, similar to the circuit level mostly with high power tube multiple composite, composed of high voltage switch part, in front of a substitution, with damping line replaceable. After a few it is difficult to find the characteristic line, the solution is to use a large current in the radiator mounting hole permitting the tube to reduce the number of metal packaging, such as: BUS13A, plastic such as BU2525/BU2527/BU2532/D3998, you can use two.
