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How to amplify sine wave with lm358
The method of amplifying sine wave by Lm358;

TL062 can be used to generate a square wave with the same frequency as the signal source and below 1kHz.

Generally, R 1 is between 100k and1m.

The peak value of square wave is determined by VCC voltage, and the valley value is determined by VSS voltage.

See the figure for details: