维修电工经常与电路故障打交道,其职责是尽速排除故障。缩短查找和排除故障所费的时间,具有很重要的经济意义。这除了熟悉和精通电路的基本工作原理外,还需要有高超的判断能力和娴熟的技巧。查找电路故障时,常用验电笔、导线和万用表(或兆欧表)等工具,本文则介绍笔者在实践中所使用的一种不用仪表的简捷查找法。 Repair electrician often deal with the circuit fault, its duty is to eliminate the fault as soon as possible. Shortening the time it takes to find and troubleshoot is of great economic importance. In addition to being familiar with and mastering the basic working principle of the circuit, this also requires superb judgment and skill. Find circuit failure, commonly used test pencil, wire and multimeter (or megohmmeter) and other tools, this article describes the author in practice using a simple method without the instrument to find.