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SANTAK—500型UPS电源是一种性价比较高的后备式不间断电源(以下简称“UPS”),在我国占有相当大的市场。本文根据笔者的检修实践,介绍该型UPS的维护、调整及常见故障的检修方法。一、电路工作点的调整 UPS使用一段时间后,由于元器件老化或其他原因,常使工作点发生变化。为了确保UPS工作在最佳状态,在控制板上设立了四个微调电位器,以备在必要时调整工作点。它们的功能和调整方法如下:
SANTAK-500-type UPS power supply is a cost-effective backup uninterruptible power supply (hereinafter referred to as “UPS”), in our country occupies a large market. This article according to the author’s maintenance practice, describes the type of UPS maintenance, adjustment and troubleshooting of common faults. First, the adjustment of the circuit operating point UPS use for some time, due to aging components or other reasons, often make the work point changes. To ensure that the UPS is working best, four trimmer potentiometers are set up on the dashboard to adjust the operating point if necessary. Their function and adjustment methods are as follows: