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Digital volume control principle explanation

2015-01-15 01:40  
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This article is a digital volume control principle explanation. The combination of text read schematics would be more effective to grasp this principle.
This circuit can be used to replace your manual volume control in a stereo amplifier. In this circuit, push the switch S1 control forward (volume increase) operation of both channels while a similar switch S2 controls reverse (volume decrease) operation of both channels. A ready-made IC from Dallas semiconductor,   DS1669  is used here.
• Replaces mechanical variable resistors
• Electronic interface provides digital and manual control
• Extensive differential input voltage range between 4.5 and 8 volts
• Wiper position maintained in the absence of power
• Low-cost alternative to mechanical control
• Applications include volume, tone, contrast, brightness, and brightness control
This circuit is very simple and compact requires few external components. Power can range from 4.5 v - 8 v. If you are the first to understand this principle, we might Duokanjibian. The principle is simple but effective.


Digital Volume Control

Digital Volume Control


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