KD110高频电脉冲发生器的功率输出管FU50及FU81的栅极负偏压-75伏及-300伏,是由整流管5Z4P供给的,其板极交流绕组与汞整流管866及870灯丝绕组绕制在同一个变压器里。因此,交流280伏电压易受大功率汞整流管中的高频脉冲电流干扰影响,造成5Z4P直流输出不稳定,甚至WY4P不易起辉,因而带来FU81的负栅偏压不稳定,不能保证有 KD110 high-frequency electrical pulse generator power output tube FU50 and FU81 negative gate bias of -75 volts and -300 volts, is supplied by the rectifier 5Z4P, the board of the AC windings and the mercury rectifier tubes 866 and 870 filament winding Winding in the same transformer. Therefore, the exchange of 280 volts voltage vulnerable to high-power mercury rectifier in the high-frequency pulse current interference, resulting in 5Z4P DC output instability, and even WY4P difficult to start, resulting in FU81 negative gate bias instability, can not be guaranteed