Easy sine & co-sine wave using simple Op-Amp
Hi, you can generate pure sine wave just using an Op-Amp. It is very simple and can be used in many application. In this article, we are going to learn how to generate pure sine wave using an Op-Amp.
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How to generate pure sine and co-sine wave?
There are different ways to generate sine and co-sine wave. But You can do it one of the most simple way. Just using an Op-Amp. Even you do not need any special one for this. Just use any general purpose Op-Amp for this. 3 resistor and 3 capacitor will be enough for this circuit.
Here all the capacitors are non-polar ceramic capacitor. You can change the values to change the frequency. Here a start button is connected in proteus circuit only. You do not need to use it in practical circuit.
The working concept is very simple. One Op-Amp generates an output which is slowed by the capacitor again another Op-Amp helps in another slow movement of reference. Thus a sine wave is formed rather than square wave. And due to capacitor phase shift, we get a co-sine wave.
While simulating in proteus, press the start button once. In practical test, you do not need this.
Practically, the circuit was arranged in a small project board and measured with oscilloscope. Here I used variable resistors to test the effect of changing resistor values. You can do that too to do some research on sine wave.
This project was a very small one and interesting too. Who don’t like sine wave? That’s why it was really interesting to me too. I hope you enjoyed the project and made one for yourself. Thank you, Enjoy!