variable resistance controll

[fedail]

how can i controll the volume sound by digital resistance like buttom instead mechanical variable resistance

 

[ericgibbs]

how can i controll the volume sound by digital resistance like buttom instead mechanical variable resistance

hi,
You could use this device:

https://www.electro-tech-online.com/custompdfs/2008/08/DS3904-DS3905.pdf

 

[fedail]

i need to know the idea then use this tool

 

[ericgibbs]

i need to know the idea then use this tool

hi,
I dont understand, are you asking how to use the ic to control the sound volume.?

 

[fedail]

i want to know the concdpt of making this technic
and use this tool with sound

thanks

 

[audioguru]

Don't use a digital linear resistor IC to control audio volume, use a digital audio-taper (logarithmic steps) volume control IC instead.

 

[fedail]

use a digital audio-taper (logarithmic steps) volume control IC instead.

mmmmmm what is it ?

 

[Willbe]

mmmmmm what is it ?

How 'bout. . .
https://en.wikipedia.org/wiki/Potentiometer

 

[fedail]

thanks about this link