Hi, this 60w home made portable inverter. Inverter are of 2 types mainly square wave and sinewave. The design discussed here is a 60w square wave inverter.
Step 1: Working Concept and CIRCUITRY
The design here is using an astable multivibrator (also known as free running oscillator) as oscillator for generating square wave pulses at a calculated frequency , The square wave pulses generated from low power 2n2222a transistor are fed to N-CHANNEL MOSFETS for amplification of power. Finally the generated AC POWER is fed to the 12v side of power transformer and stepped up to 220v or 110v ac (as per your country specification).
Step 2: Materials Needed
1.Transistor 2N2222A - 2pcs
2.1uf capacitor - 2pcs
3.12k Ohm resistor -2pcs
4.680ohms resistor 2pcs
5.N-CHANNEL MOSFET - 2PCS
6.12-0-12 TRANSFORMER 5AMP TO 10AMP.
7.BOX, GENERAL PURPOSE PCBs
8.12v 7.6ah battery
Misc. Switch, plugs, wires, etc.
Step 3: Reference Photos for Setup
Photos for reference