The project ‘Inverter uses switch mode power supply’ is use to convert direct current into alternating current using IC LM 324 and IC CD4047. This project is designed to meet up with power demand in home and office in the absence of power supply. It is designed in such a way that it will take 12v DC from the battery and convert it into 220v, 50hz AC. The circuit is capable of charging the battery that is 12v source in case of power is present.