大学物理 ›› 2010, Vol. 29 ›› Issue (3): 38-38.
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张洁 李成龙 孙润珊
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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
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张洁 李成龙 孙润珊. 伏安特性实验中电压表的改进应用[J]. 大学物理, 2010, 29(3): 38-38.
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