摘要
介绍了一种双路高阻抗电化学测试前置放大器的电路设计原理、元件选择、安装调试及其应用。它具有结构简单、输入阻抗高、放大倍数可调和零漂极小等优良性能,能广泛用于电化学测试输入前置级。
This paper introduces a double-way prepositive amplifier of high impedencefor electrochemical test,including its principle of circuit design,component selection,mou-nt ,debugging andapplication.It possesses a lot of excellent performance,such as simplestructure,high impedence of input ,adjustable times of amplification,extremely little driftof zero,etc,which can be widely used in electrochemical test as the prepositive inputstage.
关键词
电化学测试
前置放大器
运算放大器
高阻抗
electrochemical test
prepositive amplifier
operational amplifier
high im-pedence
