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1 kHz Audio Oscillator

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

The image below shows the schematic diagram for the oscillator.

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This page was produced by Peter Parker VK3YE (parkerp@alphalink.com.au). The page is continually under construction. Material may be copied for personal or non-profit use only.

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