在实际测量中,由于存在着大量非正弦波的交流量,如果采用平均值转换法,会带来很大的理论误差,因此,八十年代以来,真有效值的理论和技术都有了极大的发展。国外在集成电路单片的真有效值转换器方面发展很迅速。本文将这一技术作一简要介绍,以促进国内在真有效值转换器方面的应用。一、单片真有效值转换器的基本原理图一是一个单片真有效值转换器的框图。它分为四个主要部分:绝对值电路(V—1转 In the actual measurement, due to the existence of a large number of non-sinusoidal alternating current, if using the average conversion method, will bring a lot of theoretical errors, therefore, since the eighties, rms theory and technology have extremely Big development. Abroad in the IC monolithic true RMS converter has developed rapidly. This article will make a brief introduction of this technology to promote the domestic application of true RMS converter. First, the basic principle of a single true RMS converter Figure one is a block diagram of a true RMS converter. It is divided into four main parts: absolute value circuit (V-1 turn