测量电表内阻的实验电路分析

Analysis of Experimental Electric Ciruit for the Surveying of Inner Resistance of Electric Meter

简述了电桥测量法、等偏法、半偏法、稳压半偏法、稳流半偏法测量电表内阻的实验原理。分析了上述测量方法的测量误差。讨论了怎样根据被测电表主要规格和测量误差的要求,选取测量电表内阻的实验电路和测量方法。

Introducing the experimental principle for surveying inner resistance of electric meter using the electric bridge surveying method, iso - bias method, semi - bias method, analysing the surveying error of surveying method above ,discussing how to choose the experimental electric circuit and surveying method according for the surveying of inner re- sistance of electric meter to the main parameter of electric meter and demand of surveying error.