There may be a huge number of inverter circuits available over the internet and electronic magazines. But this is the easiest and very effective circuit Diagram. Because this 12 volt to 220 volt inverter circuit diagram is made by very few components.
The functioning of this circuit is rather unique and different from the normal inverters which involve discrete oscillator stage for powering the transistors.
However here the two sections or the two arms of the circuit operate in a regenerative manner.