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|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.|
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|This is quite interesting but unfortunately, the IC 1669 is scarce. Difficult to find in the market. I leave in Nigeria. Please is it possible to find a replacement so I can try this interesting project. Thank you and God bless.|
|i dream use binary count up and count down IC (74??? or 40???) to control R2R Ladder Digital to Analog Converter 4 bit which Build from Resistors and Digital Switch 4016 ( internal 4 switch). this only my design not tested yet, so you have volume step 0..15. this is a challenge, go ahead build this.. :)|
|I am in Uganda but it is difficult to get (DS1669), can please get another substitute for that DS1669.|
|This ic is not available in pakistan ? can we use another ic in this circuit|
|Can I use This Circuit as a remote volume controller?as far as 300 meters with no 60 hertz hum?Is this IC available in the Philippines now?thank you and more power!|
|Jason, use 7805 or 7905 to reduce voltage to 5v|
|I was going to try this circuit but the DS1669 is too expensive over $7 each. I am going to use the AD5228 at about $1 a pop and see if that works just as well.|
|4. Using a dual polariity power supply (+-5V works fine).. The maximum voltage between 8.pin and 5.pin is 8V!|
|I thought to build an amplifier with an built in home made loudspeaker, so I thought I should use this volume control and the touch switch together with the amplifier:-)|
|I bealive you man bing up, I saw many things from your web which is simple and well aplicable .easily for study for the student like us ,so keepit up|
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