Electronic circuits > Audio > Digital Volume Control
Digital Volume ControlThis circuit could be used for replacing your manual volume control in a
stereo amplifier. In this circuit, push-to-on switch S1 controls the forward
(volume increase) operation of both channels while a similar switch S2 controls
reverse (volume decrease) operation of both channels.
A readily available IC from Dallas semiconductor, DS1669 is used here.
FEATURES:
- Replaces mechanical variable resistors
- Electronic interface provided for digital as well as manual control
- Wide differential input voltage range between 4.5 and 8 volts
- Wiper position is maintained in the absence of power
- Low-cost alternative to mechanical controls
- Applications include volume, tone, contrast,brightness, and dimmer
control
The circuit is extremely simple and compact requiring very few external
components.
The power supply can vary from 4.5V to 8V.
Published on: 2004-08-21 (25472 reads)
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