利用负阻抗构成无内阻抗模拟电表  

Analogous electric meter designed with negative impedance circuits

作　　者：白泽生[1] 刘竹琴[1] 

机构地区：[1]延安大学物理与电子信息学院,陕西延安716000

出　　处：《物理实验》2003年第5期43-44,46,共3页Physics Experimentation

摘　　要：将负阻抗引入电表测量电路 ,可消除由内阻抗引起的系统误差 ,从而构成无内阻抗电表 .本文分析了电表内阻引起的测量误差 ,介绍了利用负阻抗消除内阻影响的方法 。Leading negative impedance into circuit of electric meter, the systematic errors are eliminated, thus, the no internal impedance electric meter is designed. In this paper, the measurement errors caused by internal impedance are analyzed, the method of eliminating internal impedance using negative impedance is introduced, and the principle circuit of negative impedance and application circuit are given.

关 键 词：负阻抗 内阻抗 模拟电表 测量误差 电路原理 

分 类 号：TM938.7[电气工程—电力电子与电力传动] TM933