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电击法修复碰极的陶瓷封装管ＦＵ－３００一例我台－５０Ｗ发射机上的陶瓷封装管ＦＵ－３００由于老化，最近新购了一只ＦＵ－３００，使用十几天后出现开机二十多秒后帘栅压突然消失、栅流很大的故障，高压加上后出现跳闸保护，拆下ＦＵ－３００用万用表测量却是正常，由...
Electric shock method to repair the touch of the ceramic package tube FU-300 A case I -50W transmitter ceramic package tube FU-300 due to aging, the recent purchase of a FU-300, the use of ten days after the boot more than twenty seconds Rear curtain pressure suddenly disappear, a large gate fault, high voltage coupled with trip protection, remove the FU-300 with a multimeter to measure it is normal, by ...