前言电子设备电源电路种类繁多,容量相差甚远。输出电压可高达几万伏,低至几伏,输出容量大到几十安培,小至几十毫安。从电路工作制式来看又有开关电源,线性电源之分。近几年来,无工频变压器开关电源投入使用,又添一新的分支。说到具体电路形式和种类那就更是数不胜数。电源研制工作者在对各种电源电路进行设计、实验、调试的过程中,需要有相应的测试设备。这些设备大都比较杂散、苯重、且因电源而异。仅举电源可变负载一项为例,根据输出电流大小的不同就需要采用规格不同的变阻器。本文介绍的电源测试 Introduction Electronic equipment, a wide range of power circuits, a far cry from the capacity. The output voltage can be as high as tens of thousands of volts, as low as a few volts, output capacity up to tens of amperes, as small as tens of milliamps. Circuit from the working point of view there is switching power supply, linear power of the points. In recent years, no power frequency transformer switching power supply put into use, but also add a new branch. When it comes to specific circuit types and types it is even more numerous. Power development workers in a variety of power circuit design, testing, debugging process, the need for the appropriate test equipment. Most of these devices are spurious, benzene weight, and vary by power supply. Just for example, a variable power supply load, depending on the size of the output current on the need to use different specifications varistor. This article describes the power test