有效值是描述交变电流的一个重要特征值,它能够反映电流流过导体产生的热效应,具有实际的应用价值.因此,交流电流表和交流电压表通常都是按有效值标度的.大家普遍熟知有效值的定义,却缺乏对交流电表工作原理的深入了解,以致于文献[1]提出这样的疑问:“有效值只是一个 RMS is to describe the alternating current is an important characteristic value, it can reflect the thermal effects of current flowing through the conductor, with practical value. Therefore, the AC ammeter and AC voltmeter are usually based on the rms scale. Familiar with the definition of RMS, but the lack of in-depth understanding of the working principle of the AC meter, so [1] raised the question: ”RMS is only one