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徒弟:“行管”b 极要求的正向注入(I_(b2)≥2Icp/h_(FE))和反向抽出(I_(b2)~-≥3Icp/h_(FE))电流均很大,行推动电路如何提供?师傅:彩电的行推动电路系采用变压器耦合的反极性激励电路,工作在开关状态。典型电路如图1(a)所示。当输入到行推动管 V_(1b)极电压为正脉冲时,V1饱和导通,行推动变
Apprentice: Positive injection (I_ (b2) ≥2Icp / h_ (FE)) and reverse extraction (I_ (b2) ~ -≥3Icp / h_ (FE) Large, line promotion circuit how to provide? Master: color TV line promotion circuit using transformer coupled reverse polarity excitation circuit, work in the switch state. Typical circuit shown in Figure 1 (a) below. When input to the line push tube V_ (1b) pole voltage is positive pulse, V1 saturation conduction, the line to promote change