微型机与应用Issue(5)：32-34,3.DOI:10.19358/j.issn.1674-7720.2017.05.011
一种简易的交流电压检测电路
A simple AC voltage detection circuit
摘要
Abstract
A novel AC voltage detection circuit based on integrated operational amplifier is proposed.The circuit consists of a voltage decay circuit,a differential operation amplifier,a synthetic circuit,a voltage zero crossing detection circuit and a frequency detection circuit.The key parameters are derived through theoretical analysis.Then,the circuit is simulated with Multisim.The simulation results are in agreement with the theoretical calculation.According to the design parameter of the simulation,experimental circuit is built.The experimental results show that the detected voltage is 3.4 V,voltage zero crossing detection signal is 5 V square wave and the frequency is 100 Hz.These results are in agreement with the theoretical calculation and the simulation,which validate the proposed circuit.The new circuit is simple,reliable and easy to implement,which provides a new way for application of AC voltage detection in power and instrumentation systems.关键词
交流电检测/过零检测/集成运算放大器/差分运算放大电路Key words
AC voltage detection/voltage zero crossing detection/integrated operational amplifier/differential operational amplifier circuit分类
信息技术与安全科学引用本文复制引用
张卫丰,张艳辉,罗欢..一种简易的交流电压检测电路[J].微型机与应用,2017,(5):32-34,3.基金项目
广东省自然科学基金博士启动项目(S2012040007242) （S2012040007242）
深圳市科技计划项目(JCYJ20160527101807403,JCYJ20140418100633638) （JCYJ20160527101807403,JCYJ20140418100633638）
深圳信息职业技术学院教研课题(2016jgyb03) （2016jgyb03）
