This is a versatile function generator that can produce three different waveforms although it is built with only one CMOS IC. The three waveforms are squarewave, triangle, and sine wave.
The output frequency can
be varied through potentiometer P1 from 12 Hz up to around 70 Hz in two ranges selectable through switch S1. Switch S2 selects the desired waveform.
Potentiometer P3 varies the amplitude of the output signal. Trimmer P2 adjusts the symmetry of the triangle wave while the trimmer P4 adjusts the quality of the sinewave.
Selector switch S3 selects the output waveform:
- position 1 = squarewave
- position 2 = trianglewave
- position 3 = sinewave
Electronic Circuits volume 1.0 - Circuit Nr. 81
The complete data of the electronic circuit described above can be found in the following book and is available from Amazon.com.
Click on the image to view the book.