一、前言近年来国内外无工频变压器电源在电子仪器中的应用越来越广泛。在八一年全国计算机电源年会上,北京计算所张广明同志发表了“电源驱动型自激变换器”一文,无工频变压器技术又有了新的进 First, the foreword In recent years, no power frequency transformer at home and abroad in the electronic equipment in the application of more and more widely. At the National Computer Power Annual Conference in 1981, Comrade Zhang Guangming from Beijing Computation Department published a paper titled “Power-driven Self-excited Converter.” There is a new wave of power frequency transformer technology