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研究了微机中具有代表性的半桥脉宽式开关电源的电路的电路特点，提出了简捷、合理的检修方法和步骤，以及关键测试点的经验数据和波形图。
The circuit characteristics of a typical half-bridge pulse-width switching power supply in microcomputer are studied. A simple and reasonable method and procedure of maintenance, as well as the empirical data and waveform diagrams of the key test points are presented.