The following diagram is an inverter circuit which will give you 220V AC 50Hz with maximum power output of 100W. This inverter built using transistors for both the square wave generator module and the amplifier module.
Inverter Diagram:
The Q1 and Q2 used generate square wave. Q5-Q8 amplify the signal and the transformer to increase the AC/square wave current from 12VAC to 220V AC 50HZ.
Inverter PCB layout:
The following image is the bottom/copper PCB layout and to layout for the components placement. You may use universal PCB veroboard to make it easier.
