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Using the same pots twice in a circuit.

Zander

Sep 11, 2010
19
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Sep 11, 2010
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19
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?
 

Zander

Sep 11, 2010
19
Joined
Sep 11, 2010
Messages
19
they make dual pots controlled by a single shaft you know!

Digikey examples

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.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
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Jan 21, 2010
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25,510
But remember these CMOS switches have resistance, and it is non-linear, especially when you get near the supply rails.
 
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