Circuit Project Electronic

This is an idea for a true sine inverter to get 120 or 240VAC from lower voltage DC. This could be handy for running a mini-fridge from your car all the way up to powering your house with photovoltaic cells and lead acid batteries. Most inverters found in stores use an approximated sine wave or [...]

Here is Circuit classic Wien Bridge oscillator using an Op-Amp covering a frequency range of 15 to 150kHz in four switched steps.
Two conditions exist for a sinusoidal oscillator. Regenerative or positive feedback, and a closed loop gain of unity. The losses in the wien feedback circuit, are such that the open loop gain of [...]

I introduce the oscillator which outputs the Sine wave and the Cosine wave at the same time using the operational amplifier. Because the distortion was big at the circuit to have been introducing before, I improved at the circuit with little distortion. The circuit this time combines the integration circuit and the inverter by the [...]