双量程直流电压表的组装  

Assembly of Double-Range DC Voltmeter

作　　者：李尧[1] 张学华[1] 

机构地区：[1]北华大学物理学院,吉林吉林132013

出　　处：《吉林化工学院学报》2013年第3期82-84,共3页Journal of Jilin Institute of Chemical Technology

基　　金：吉林省教育科学"十二五"规划重点课题(ZC12020)

摘　　要：在电流表改装电压表的实验中,在未给出监测表和串联电阻的阻值情况下,给出了一种把电流表改装成双量程电压表的方法,该方法首先采用半偏分流法确定电流表的内阻,然后根据电压表的原理,确定串联电阻的值,最后组装一个双量程电压表.In the experiments of ammeter refitting voltmeter and in the case of no monitor amperage meter and value of series resistance, a method is given which converted a ammeter into a double-range voltmeter. At first, the method of the internal resistance of ammeter was determined by half deflection method. According to the principle of voltmeter, values of series resistance is confirme and double-range voltmeter was aassembled.

关 键 词：电流表 电压表 半偏法 电流表改装 

分 类 号：TM933.22[电气工程—电力电子与电力传动]