文档介绍：有线电视用光接收机电源的改造
actively carry out the law on civil air defense education, drawn out of the air defense in Pingl to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
去掉原电路的其它一切无关元器件，就宣告完成。
二次副边电路（TL431. FL817 )稳压环路的检查改进
把原电路按上图进行改动即可，其元件作用及要求如下：
图中所用整流二极管、反馈用二极管均采用快速恢复二极管，不可用其它一般整流二极管。
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in