基于CD4046锁相环的电压隔离采样电路设计

Design of Voltage Isolation Sampling Circuit Based on CD4046 Phase Locked Loop

本文以锁相环频率跟踪技术为基础,结合锁相环芯片CD4046实现了一种电压隔离采样电路,并对电路进行了实验分析。该电路简单实用,采样信号能够直接作用于控制系统,方便后级电路进行控制。

In this paper,based on phase-locked loop frequency tracking technology,a voltage isolation sampling circuit is realized by combining CD4046.This circuit is simple and practical,sampling signals can be used directly in control systems,convenient rear level circuit for control.