prprog
Member
Hi
Which electronic circuit can be used to substitute a potentiometer? I have found so far circuits that used digital IC's to substitute one side of a pot. What I am looking is a circuit that substitute the 2 sides of a potentiometer, therefore it will have 3 connections to control.
I took a look at a AD5220 , it is what I intended to do....but I don't have such IC. Can it be done with a LED + LDR (optoisolator) . I have plenty of those which I used for audio analog control. I was thinking of using 2 optoisolators, but need to make the led in one light up "more" and the other to light "less" with the same control signal. Any suggestions?
Thanks,
PRPROG
Which electronic circuit can be used to substitute a potentiometer? I have found so far circuits that used digital IC's to substitute one side of a pot. What I am looking is a circuit that substitute the 2 sides of a potentiometer, therefore it will have 3 connections to control.
I took a look at a AD5220 , it is what I intended to do....but I don't have such IC. Can it be done with a LED + LDR (optoisolator) . I have plenty of those which I used for audio analog control. I was thinking of using 2 optoisolators, but need to make the led in one light up "more" and the other to light "less" with the same control signal. Any suggestions?
Thanks,
PRPROG
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