论文部分内容阅读
自举升压电路是为提高行输出级的效率,减小行电流而设的。其简单的工作原理:如图4所示,通电时12 V电源经6BG1二极管、行输出变压器的T1绕组加到行输出管的集电极。在第一个行激励脉冲到来时的t1时刻,行管饱和导通,此时有电流从6BG1、T1绕组、行管的c、e极中流过,如图4中实践所示。此电流在T1两端形成一个上正下负的电压,同时在T2绕组上也感生一个上正下负的电压来。此电压向自举升压电容6C21充电,充电回路如图4中的虚线所示,充电电
Bootstrap circuit is to improve the efficiency of the output stage, reducing the line current and set up. Its simple working principle: As shown in Fig. 4, when the power is on, the 12 V power is supplied to the collector of the row output tube via the 6BG1 diode and the T1 winding of the output transformer. At the moment when the excitation pulse arrives on the first line, the tube runs saturated and the current flows from the 6BG1 and T1 winding to the c and e poles of the tube, as shown in Figure 4. This current forms a positive, negative voltage across T1 and a positive, negative voltage across T2. This voltage to the bootstrap boost capacitor 6C21 charge, the charging circuit shown in Figure 4 in the dotted line, charging power