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Using the same pots twice in a circuit.

Discussion in 'General Electronics Discussion' started by Zander, Sep 14, 2010.

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  1. Zander

    Zander

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    Sep 11, 2010
    Say if I wanted to build two circuits that use the same values of pots.

    4 555 timers, 2 of these ICs to each circuit.

    I use a quad bilat to control the power at the Vcc pin for each of these circuits,

    I hit a switch that turns off one circuit and turns on another.

    Do I need another pair of pots for the other circuit or could I run each circuit to the two available pots I have?
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    they make dual pots controlled by a single shaft you know!

    Digikey examples
     
  3. Zander

    Zander

    19
    0
    Sep 11, 2010
    Now that's something!

    One pot thing though?

    My other idea was to use a bilat switch, to change 'to which circuit the pot charge goes to'

    I think I could get away with it since I will be in a 5 to 6 volt range.
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    But remember these CMOS switches have resistance, and it is non-linear, especially when you get near the supply rails.
     
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