# pure sine wave inverter

1. ### How to make a pure two sided sine wave generator with astable multivibrator?

Hello again, I wanted to make an oscillator that provodes a sine wave. I don't have an oscilloscope with me but I simulated this and found that the sine wave is always at positive side. I want to make sonething that can give me half positive side and half negative side sine wave using one sided...
2. ### Help me I need a circuit 3000va pure sine wave inverter with charger

Please help me . I need a circuit 3000va pure sine wave inverter with charger. I have a 3000watt but it's square wave