Inverter- DC to AC Inverter

A power converter, or inverter, is an electronic device or circuitry that changes direct current to alternating current. 

 The input voltage, output voltage and frequency, and overall power handling depend upon the planning of the particular device or circuitry. The inverter doesn't produce any power; the power is provided by the DC power source.

Video source by- Learning Engineering

A power inverter is completely electronic or could also be a mix of mechanical and electronic circuitry. Static power inverters don't use moving components within the exchange system.

A power inverter is used to provide an un-interrupted 220 Volt  AC or 110 Volt  AC (depending on the line voltage of the particular country) supply to the device connected because the load at the output socket. The inverter provides constant AC voltage at its output socket once the AC mains power supply isn't available.