Use this circuit to
implement those knobs you see on oscilloscopes, radios and other
devices. Turning the knob clockwise generates a series of
low-going pulses from the COUNT-UP output while turning
counter-clockwise generates a series of low-going pulses from the
The circuit is based on a low cost Bourns digital encoder.
Visit their page www.bourns.com
, to see a complete selection of these devices.
Click the above thumbnail to view the schematic
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