Adjustable sine-wave audio oscillator

Posted on Sep 7, 2012

Lamp LI stabilizes the loop gain at higher frequencies while the limiting action of R2, CRI, and CR2 prevents clipping at low frequencies and increases the frequency adjustment range from about 3:1 to greater than 10:1.

Adjustable sine-wave audio oscillator
Click here to download the full size of the above Circuit.

Waveform purity at low frequencies for a Wien bridge oscillator is enhanced by diode limiting.

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