By comparing the heating effect of an unknown AC signal to that from a known DC reference, metrologists can determine the RMS AC quantity (voltage or current) in terms of the DC quantity.

为了对比一个已知直流参考的未知交流信号热效应，计量人员可以确定在一段时间内直流的交流有效值(电压或电流)。

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Reference source outputs a stable reference signal which is independent of power supply voltage, temperature and process.

其输出的基准信号稳定，与电源电压、温度以及工艺的变化无关。

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The reference signal in this control approach is obtained by detecting both source current and load voltage.

该控制方式的指令信号通过同时检测电源电流和负载电压得到。

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