摘要
比较了实验教学中采用的放大电路输入阻抗的常用的几种测试方法（伏安法、等值法、换算法）在测量高输入阻抗时存在误差大等缺陷。介绍了一种测量高输入阻抗的方法——放大法,它较好地避免了常用测试法中的缺陷,具有测量误差小、操作方便的优点。
Input impedance measurement of an amplifier is a main part in Experimental Teaching of Circuit.However,some defects exist in high input impedance measurement on conventional methods.A new method for high input impedance measurement is presented.With this method the defects existing in high input impedance measurement can be overcome.This method has the advantages with the virtue of small measurement errors and convenient operating.
出处
《实验技术与管理》
CAS
北大核心
2010年第1期37-39,共3页
Experimental Technology and Management
关键词
高输入阻抗
常用测试法
放大测试法
high input impedance
conventional measurement method
amplified measurement method
