微型计算机的不间断电源(UPS)

本文叙述一种小功率连续式ＵＰＳ的电路设计。采用斩波器调压与逆变器各输出级通过变压器进行功率迭加的电路形式，这样电压、频率控制各自独立，故控制电路简单可靠，因逆变器各级每１／１６周期才工作一次，故损耗低、效率高，且能抑制低次的谐波，使输出交流滤波器小型化。

Uninterruptible Power System of Microcomputer

This paper discusses the circuit design of a low power and continuous UPS unit. The circuit model is one of adopting a chopper for voltage adjustment and incorporating a transformer use in the output stage power of the invertor. As the voltage and frequency are regulated independently of each other, the control circuit become simpler and the operation more reliable. Since each time the output stage power of the invertor works at an interval of 1/16 cycle only, the power loss is low and the efficiency high. Cousequently, the invertor surpasses the low order harmonics by itself, and allows the AC output filter to be dully miniaturized.