大学物理 ›› 2010, Vol. 29 ›› Issue (3): 38-38.

• 著者文摘 • 上一篇    下一篇

伏安特性实验中电压表的改进应用

张洁 李成龙 孙润珊   

  1. 安徽理工大学理学院,安徽淮南230001
  • 出版日期:2010-03-25 发布日期:2010-03-20

The improves and application of voltmeter in experiment of characteristic of volt-ampere

  • Online:2010-03-25 Published:2010-03-20

摘要: 改进了传统电压表的面板设计,使电压表不仅能测两端的电压,还能测量自身的电流.于是在测量元件的伏安特性实验中,使用该电压表可以不考虑被测器件电阻的大小,均采用电流表外接的接线方式,即让电压表分流.再利用电压表的电流测量功能,测出自身分流电流的大小,从而可以准确得出被测器件的电流与两端的电压.

关键词: 满偏电流, 分度值, 分流

Abstract: The front-panel design of traditional voltmeter is improved and thus the voltmeter watch is made,which is able to not only measure the electric voltage, but also the current of oneself. In the experiment of characteristic of volt-ampere, the new voltmeter can be used in spite of electric resistance, all adopt the ammeher circumscribes. The voltmeter can be used to measure current of oneself, so that the voltage and current accurately of the electronic device can be measured.

Key words: current of full deflection, number of scale mark, split-current

中图分类号: 

  • O4-33