我看了看烧机的许多话题,想谈谈怎么样去分析,
1.出现电流饱和的信号,例如以下的波形.
1150508607.tif
2.Vceo is very marginal,almost or over 700V when power on
If You want to see the waveform ,pls wait for a moment ,
3. the Junction temperature is very marginal ,or the power stree is over 85%
eg, if the power Diss is 0.5W ,and the Case temperature of the Q1 is 120C ,the R(jc)is 54 (c/W),then it is very easy to damage the Q1
关于烧机问题的分析
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