驱动电路在未接入主电路IGBT的G,E时,10欧姆电阻两端波形为电压很低的方波,电阻无发热现象.当接入主电路IGBT的G,E时,10欧姆两端波形如图所示,正负尖峰值为20V,电阻严重发热,3120也有些热.请问可能是什么原因,我检查过主电路,并为发现短路啊,请大家帮帮忙啊,谢谢了!!!
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