電磁爐上8050和8550三極管，如何檢測好壞？教你方法其實很簡單 #我愛電器維修

hello friends Today I will share with you what is on the induction cooker This is right These two are one S8050 and one S8550 After the two of them are broken, there will be an induction cooker Fry the IGBT and burn the insurance If the IDP is burned out during maintenance We must first check that the two pairs of tubes These two pairs of tubes are actually very simple to measure Today I will share with you how to measure it Let's look at these two triodes 8050 it is NPN type Then 8550 is PNP type The side with words faces ourselves Look at its silver foot definition are the same Most of them are EBC Then this is the same We use the secondary gear of the multimeter to measure When measuring, this NPN type We use this red pen to connect to the silver pin in the middle Then the black test lead is connected to the first pin Let's see his pressure drop is 667 Then we test the latter 660 There won’t be too much difference between the two of them. If the difference is too much, it proves that he is bad Then we turn the test pen over again The black test lead is connected in the middle Then connect the red pen to the first pin he didn't respond Then test the third leg also no response like this situation Generally speaking, it can be judged that this is a good then we will Measure this 8550 of this PNP type For this we need to use this black test pen connected in the middle Then the red test lead is connected to the first pin It is a pressure drop of 693 Then measure the third foot 690 The two of them are also organized, so there is not much difference. almost the same If the difference is particularly large, it can also be judged as he is bad Then we connect the red pen to the The red test pen is connected in the middle Then use the black pen to measure The first kick is nothing Then the third foot didn't respond In this case, we can judge that this is good This method can roughly judge Is this triode good or bad? if his performance declines It cannot be measured with a copybook So when we were repairing the induction cooker, we encountered To burn IGBTs, we first need to make this general Just replace it with him