近年来,国民经济的不断增长带动了我国医疗事业的发展,也促使了各地医院工作的改革与发展,使得医院医疗水平有了日新月异的提高,也促使医疗器械在数量和质量上的突飞猛进。本文从CEPrO1000型多参数监护仪开关电源为例,简要分析了单端反击式开关电源的工作原理、部件功能,并就其有关故障的维修进行了深入的分析。 In recent years, the continuous growth of the national economy has led to the development of medical undertakings in our country. It has also led to the reform and development of the work of hospitals in various places. As a result, the medical standards of the hospitals have been improving with each passing day, and the quantity and quality of medical devices have also been greatly improved. This article from the CEPrO1000 multi-parameter monitor switching power supply as an example, a brief analysis of the single-ended switch-mode switching power supply working principle, component functions, and its fault-related maintenance in-depth analysis.