用单片机产生SPWM及制作小功率UPS

SPWM Waveform Formed by Simple Microprocessor and a 40W UPS Made by Using It

介绍了用单片机产生 SPWM的过程 ,给出了用等效面积法制作 SPWM表的方法 ,编写了产生 SPWM的中断查表程序 ,利用此方法 ,采用 89C2 0 5 1和串行 A/ D制作了 40 W的小功率 U PS.通过实际应用 ,证明了该 U

This paper introduces to make SPWM with simple microprocessor, to give the method of making SPWM table and the programe of interrupt-looking up table. At last to make a cheap UPS of mini-power of 40W for instruments.