采用ICL7650的有源线性测量电桥

An Active Linear Measuring Bridge Using ICL7650

本文论述采用 ICL7650超低漂移斩波自稳零式运算放大器构成的有源线性测量电桥,并给出了实测数据和特性曲线。该有源测量电桥具有良好的线性,在ε=△R_x/R_x=(—100～+800)%范围内,线性度误差不超过±0.5%。

This paper describes the active linear measuring bridge with ICL7650.The opera- tional amplifier,ICL7650.is of super low shift and autostable zero point.The practical testing data and characteristics are given in this paper.This active bridge has very good linearity.The linearity of the bridge is not more than -0. 5% to+0.5% within range ε=ΔR/R= (-100 to +800)%.