Introduction - If you have any usage issues, please Google them yourself
Use MCU AT89S52 and timer 8254 to control HEF4752 generate SPWM wave to control the main power circuit to output three-phase AC, whose frequency and voltage can be both changed, and set inverter s function, change the output frequency, display the frequency s current value. Writen by MCS-51 instruction, compiled by Keil uVision3.