功率因数自动补偿器是一种电子自动开关，它采用集成电路等元件组成若干基本回路，从而完成检测、逻辑控制和输出信号3个基本功能，最终达到根据需要自动投切电容器的目的。控制器分检测、计数、译码、输出及电源5部分。检测电路将用电网络中的电压和电流相位差转换成不同极性 Automatic power factor compensation is an automatic electronic switch, which uses integrated circuits and other components to form a number of basic circuits to complete the detection, logic control and output signals of the three basic functions, and ultimately to achieve the purpose of automatic switching capacitors as needed. Controller sub-detection, counting, decoding, output and power supply 5 parts. The detection circuit converts the phase difference of voltage and current in the electricity network into different polarities