计算机ATX电源的原理及故障分析

Analysis on Operating Principle and Faults of ATX Power Source of Computer

首先论述了计算机ATX电源的组成,ATX电源的新增功能及特点。分析了ATX主电源的工作原理,辅助电源的工作原理,开机信号产生原理。探讨了计算机ATX电源的几种常见故障,总结了查找ATX电源故障的步骤,查找电源故障的两种方法:冷态检测法,热态测试法。

The composition, new functions and characters of ATX power source of computer are introduced firstly, the operating principle of its host power source and auxiliary power source and the principle of opening signal are analyzed, and several kinds of common faults of ATX power source are discussed. Finally, the processes and two kinds of methods for seeking power failure, namely on-line detection and off-line detection, are concluded.