Using a Single 3-pin Potentiometer with a dual output Op-Amp?

Discussion in 'General Electronics Chat' started by TheLaw, Sep 19, 2010.

  1. TheLaw

    Thread Starter Member

    Sep 2, 2010
    228
    2
    Hello,

    I am trying to put together a Cmoy which I know is not uncommon, but I have a question regarding the potentiometer. I will be using an op-amp with two channels of output and thence I am supposed to use a potentiometer that has dual resistances. I think they usually have six pins. The Panasonic EVJ and a lot of the Alps are like this.

    My question is if I can use a regular single output potentiometer (3-pins) to control both channels? Should I just get double the resistance to make up for it?

    Thanks.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    It won't work. To have stereo out (did you mean one of these? - http://en.wikipedia.org/wiki/CMoy ) you have to keep right and left channel signals separate. A dual pot is needed.
     
  3. marshallf3

    Well-Known Member

    Jul 26, 2010
    2,358
    201
    Radio Shack actually still carries a dual 500K.
     
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