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4负压电源胆机功放管正常工作时,需要在控制栅极加上相对阴极为负值的电压。获得该电压通常有两种方法。①自给阴极偏压法自给阴极偏压即在功放管的阴极接上一定阻值的电阻,利用屏流经此电阻时产生的电压降作为栅极的
4 Negative pressure power amplifier tube amplifier normal work, the need to control the gate plus the relative negative cathode voltage. There are usually two ways to get this voltage. ① self-sufficient cathode bias cathode bias that is connected to the cathode of the power amplifier tube resistance of a certain resistance, the use of screen through the resistor voltage drop generated as a gate