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索尼KV2010CH型彩电行输出管SG613损坏后,彩电将出现“三无”故障。该行管与普通行管不同,是可关断晶闸管GTO(Gate turm—off Thyistor)。主要特点是:它能根据控制极所施加的触发信号极性的不同而自行转换,即当控制极加正向触发信号时便导通,当控制极加负向触发信号时便关断,而普通晶闸管靠控制极正信号触发后,撤掉信号仍能维持导通,欲使之关断,必须切断电源使正向电流低于维持电流I_H、或施加反向电压强迫关断,这就必须增加换向电路,如此不仅增大了设备体积和重量,还产生波形失真
Sony KV2010CH color TV line output tube SG613 damaged, the color TV will appear “three no” fault. The line control and ordinary line control is different from the thyristor GTO (Gate turm-off Thyistor). The main features are: it can be controlled according to the polarity of the trigger signal to switch their own polarity, that is, when the control plus positive trigger signal is turned on, when the control plus negative trigger signal is turned off, and Normal thyristor controlled by positive pole signal is triggered, the signal can be removed to maintain conduction, to make it off, you must cut off the power supply to maintain the current below the current I_H, or reverse voltage forced to turn off, which must be Increase the commutation circuit, so not only increased equipment size and weight, but also produce waveform distortion