期刊论文

Error Analysis of Measuringthe Internal Resistance of Refitted Ammeter by Substitution Method

中文

大学物理实验

1007-2934

2024

37

1

37-40

10.14139/j.cnki.cn22-1228.2024.01.008

2021年华中师范大学教学研究项目(202145) 华中师范大学大学生创新创业训练项目(ZC202310511059)。

本校为第一机构

本文旨在探讨电表改装实验中,用替代法测量表头内阻时,电源电压的取值对改装表内阻测量的影响。通过理论计算和实验探究的方法,发现较大电源电压导致测量误差增加的本质原因是保护电阻在整个电路的电阻中占比太高。本文的研究结果为提高...展开更多 本文旨在探讨电表改装实验中,用替代法测量表头内阻时,电源电压的取值对改装表内阻测量的影响。通过理论计算和实验探究的方法,发现较大电源电压导致测量误差增加的本质原因是保护电阻在整个电路的电阻中占比太高。本文的研究结果为提高替代法测量电阻的精度提供改进方向。收起

The purpose is to discuss the influence of the value of the power supply voltage on the measurement of the internal resistance of the modified meter when the replacement method is used to measure the internal resistance of the meter in the experiment of the meter modifi...MORE The purpose is to discuss the influence of the value of the power supply voltage on the measurement of the internal resistance of the modified meter when the replacement method is used to measure the internal resistance of the meter in the experiment of the meter modification.Through theoretical calculation and experimen...