摘要
基本WILSON镜像电流源的电流I与I′有良好的匹配性,但存在着小量电流失配的不足之处。本文对基本WILSON镜像电流源进行了改进,改进后的电流源诸多性能都有了较大的提高,如差模增益、共模抑制比等,这对于提高前置放大器共模抑制能力、有效采集微弱信号是非常有利的。
The current of basic WILSON image current source between I and I' matches well, but the defect of less current loss effects to a certain degree performance of measuring instrument when the circuit source is applied. In the paper, the basic WILSON image current source is reformed,when the reformed current source is connected to amplification circuit of measuring instrument, the circuit will provide stronger common rejection capability to amplifier, and convenient to acquisitions slight signal effectively to us.
出处
《中国仪器仪表》
2005年第5期66-68,共3页
China Instrumentation
