基于UC3842的小功率开关电源工作原理及维修  

Operating Principle and Maintenance of UC3842-based Low Power Switching Power Supply

作　　者：张勇[1] ZHANG Yong(Cold Rolling Mill of Maanshan Iron and Steel Co.,Ltd.,Maanshan,Anhui 243000,China)

机构地区：[1]马鞍山钢铁股份有限公司冷轧总厂,安徽马鞍山243000

出　　处：《冶金动力》2022年第2期117-119,共3页Metallurgical Power

摘　　要：分析了应用广泛的UC3842的小功率开关电源工作原理,根据维修开关电源的实践经验,介绍了开关电源的故障判断和维修。This article analyzes the working principle of the widely used UC3842 low power switching power supply,and illustrates the fault judgment and maintenance of the switching power supply according to the practical experience of repairing the switching pow⁃er supply.

关 键 词：开关电源 UC3842 故障判断 维修 

分 类 号：TM564[电气工程—电器]