The Sine Wave Inverter Circuit project is designed to convert DC power (from a battery or solar panel) into AC power with a pure sine wave output. Unlike square wave or modified sine wave inverters, this circuit produces a smooth AC waveform, making it suitable for sensitive devices like computers, medical equipment, and home appliances.

It uses a microcontroller or oscillator circuit to generate PWM signals, which are then filtered and amplified to produce a stable AC sine wave output.

Parts Used:

1. Battery / DC Supply (12V / 24V / 48V) – Input source
2. Microcontroller / Oscillator (Arduino / IC 4047 / SPWM Generator) – Generates PWM
3. MOSFETs / IGBTs – Acts as switching devices
4. Driver Circuit – Amplifies control signals for MOSFETs
5. Step-Up Transformer – Converts low-voltage DC to 220V/110V AC
6. Filter Circuit (LC Filter) – Smoothens the PWM into pure sine wave
7. Cooling Fan / Heat Sink – Prevents overheating of power components