1 KHz Audio Oscillator schematic


Posted on Jun 16, 2012

This circuit consists of a CMOS square wave oscillator on a frequency of approximately 1 kHz. The RC filter, which has a roll-off frequency of 500 Hz, filters the harmonics, providing a sine-wave output.


1 KHz Audio Oscillator schematic
Click here to download the full size of the above Circuit.

The oscillator has many uses ? sidetone circuits in transmitters and signal injectors for audio tests are just two.




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