【摘要】 将８９Ｃ５１单片微机应用于电力系统功率因数自动控制，设计中利用了差动式相敏放大器检测电路和充分合理地使用了８９Ｃ５１单片机片内ＲＡＭ，使电路结构简单，抗干扰性强更多还原

【Abstract】 : We have applied the 89c51 chip microprocessor to the power factor automaticcontrol of electric power systemWe have used thedifferential phase sensitive amplifier cleverly, and used the RAM of the 89c51 chipmicroprocessor fully and reasonably So tnestructure of the electric route is simple, andstable to the interference更多还原