|
This digital volume control has no pot to wear out and introduces almost
no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN buttons. This simple circuit
would be a great touch to any home audio project.U1 is a digital pot. IC and available from Dallas Semiconductor. S1 turns
the volume up, S2 turns it down. Note That input signal should not fall below -0.2 volts.
| Component |
Value |
|
C1
|
0.1uf Ceramic Disc Capacitor
|
|
U1
|
DS1669
|
|
S1,S2
|
Momentary Push Button Switch
|
|
MISC
|
Board, Wire, Socket For U1
|
Reference : Aaroncake
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Updated : February 15, 2002