摘要
在实际使用电压表、电流表测量电压、电流时,因测量仪表的内阻会产生一定的测量误差。文章从原理上分析了产生这些误差的原因,提出了可用不同量程或同一量程的两次测量方法来减小以上测量误差。对测量结果要求比常用仪表更加精确的用户用一定参考价值。
When the electric voltage and current are measured with voltmeter and ammeter, certain measuring errors could occur due to the inherent resistance. This article analyzes the causes of these errors theoretically, and proposes a way to reduce the error, that is, to do the measurement twice. This may provide some inspiration for those who demand better measuring results.
出处
《实验科学与技术》
2007年第1期154-156,共3页
Experiment Science and Technology
关键词
电压表
电流表
内阻
测量误差
voltmeter
ammeter
inherent resistance
measuring errors
