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文章对于发射机更换功率模块和控制板后,导致发射机高末直流屏压不足的原因进行了对比测试和深入分析,并通过试验进一步证实,高末直流屏压不足与单个功率模块输出电压有关,而功率模块中IGBT的栅极电阻和开关状态检测电路则是影响功率模块输出电压大小的两个主要因素。
The article makes a comparative test and an in-depth analysis of the reasons why the transmitters are not enough voltage at the high end of DC after replacing the power module and the control board of the transmitter, and further confirms through experiments that the insufficient high-end DC voltage is related to the output voltage of a single power module , While the gate resistance of the IGBT in the power module and the switch state detection circuit are the two main factors that influence the output voltage of the power module.