目前,高清晰度工业电视广泛应用于天文、宇宙飞船等方面,它采用的是SEC或SEM摄象管,其中高压电源是摄象机的关键电路之一,下面介绍一种实用的晶闸管控制高压电源。 本电路如附图所示,是用场回扫脉冲触发晶闸管,使电容C_1放电,产生振荡,通过变压器升压,二极管整流后输出8kV高压供摄象管使用,还可以稍加改装,输出15kV的高压。 Currently, high-definition industrial television is widely used in astronomy, spacecraft and other aspects, which uses the SEC or SEM camera tube, which is the high voltage power supply is one of the key circuits of the camera, the following describes a practical Thyristor control high voltage power supply. The circuit shown in the figure, is the use of field flyback pulse trigger thyristor, the capacitor C_1 discharge, oscillation, through the transformer boost, the diode rectifier output 8kV high voltage for the use of the camera, you can also slightly modified, the output 15kV high pressure.