等偏法测灵敏电流计内阻误差分析

An Analysis of Errors Arisen From the Survey of InherentResistance of Sensitive Galvanometer by Isogonic Method

本文分析了等偏法测电流计内阻时,在给定U_n,然后改变限流电阻R_n,使电流计有一定偏转格数α的方法的不足.讨论了采用给定R_n值,改变U_n的灵敏电流计内阻测量方法.并对其系统误差和误差分配进行了推导,得出该方法可提高测量精确度的结论.

In this paper, the common process in surveying the inherent resistance of sensitive gal-vanometer by isogonic method is analyzed and the deficiencies of this process are pointed out. As aremedy, a new process that can improve the survey accuracy is given and discussed.