This paper describes the principle of sin voltage source and current source that can be programme controlled.

文章主要介绍程控正弦功率电压源和电流源校表仪的原理。

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In the electrotechnics basis theory, it's very convenient to solve one branch's voltage and current by the equivalent transformation between the voltage source and current source.

利用电压源与电流源之间的等效变换求解某一支路电压、电流，是电工基础理论中非常方便的方法。

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Generally, such instruments can simultaneously source voltage and measure current or simultaneously source current and measure voltage.

一般地说，这种仪器能够同时输出电压、测量电流以或者同时输出电流、测量电压。

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