“南都杯”通信电源有奖知识竞赛试题一、填充题１现代通信供电系统，将由供电方式向供电方式发展。２相控整流器的基本工作原理是：交流输入经→→→直流输出，是靠调整，改变可控硅的大小来控制输出电压的稳定。３高频开关整流器的主电路是：交流输入→→→→高频... “Nadu Cup” communication power prize knowledge contest test questions First, fill in questions 1  modern communications power supply system, power supply from the way to power supply development. 2  phase-controlled rectifier basic working principle is: AC input by →→→ DC output, is by adjusting the size of the SCR to control the output voltage stability. 3  high frequency switching rectifier main circuit is: AC input → → → → high frequency ...