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在《工业电子学》课程的实验中,通常用示波器观察交流放大器的非线性失真,本文介绍利用普通万用表检测交流放大电路的非线性失真,实践证明,是一种简便而实用的方法。 将万用表的转换开关拨到交流10V挡,测量1.5V的干电池电压,当干电池的正极和正表笔相接、干电池的负极和负表笔相接时,表头有指示,对调两表笔测量时,表头五指示,说明该万用表的交流电压挡为半波整流电路。
In the course of “Industrial Electronics”, the oscilloscope is usually used to observe the nonlinear distortion of the AC amplifier. This article describes the use of an ordinary multimeter to detect the nonlinear distortion of the AC amplifier. It has been proved that this method is a simple and practical method. The multimeter switch to the exchange of 10V block, measuring the battery voltage of 1.5V, when the positive battery and the positive battery table phase, the negative battery and the negative battery table phase, the meter has instructions, Five instructions, indicating that the multimeter AC voltage block for the half-wave rectifier circuit.