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(一)触发器(线路见图1)由于主振管G_(?)与阴极输出器的G_2、G_3共一组灯丝电源而经常发生如下故障:用示波器看主振级与阴极输出器的输出波形,如图2所示。
(A) trigger (line shown in Figure 1) As the main tube G_ (?) And the cathode output of G_2, G_3 a total of filament power supply and the following failures often occur: Oscilloscope with the main oscillator output level and cathode output Waveform, as shown in Figure 2.