how to emulate a pot on a breadboard using resistors

Started by jaguarcat311, August 13, 2005, 07:55:32 PM

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jaguarcat311

is it possible? i breadboarded the orange squeezer compressor, but i dont have any pots, so i just used some resistors of equal and lesser values...... switching between them..... im not gettin any variance in sound out of the emulated pot right before the output, but the first pot works fine as a volume
Blood so deep the horse must hold his head up high

RicF

Sure, in most cases the pot is used like a voltage divider: input on one leg, output on the middle (wiper), and third leg to ground. So to emulate a 100k pot turned half way, use two 50k resistors in series and hook the output to the middle junction of the resistors.

bigjonny

....or, put a 100k resistor from signal to ground to emulate a pot cranked up all the way...

petemoore

I'm pretty certain you're talking about the 10kpot, like on mine, when I turn that pot, it is very hard to tell whether I'm imagining it makes any discernable difference or not, I think this OS Board would have done as well to have any two seriesed resistors valued there to add up to ~10k, Seems even one 10k resistor would provide 'normal' function...mimicing exactly what the pot adjustment does, which would be 'about nothing'.
Tha'ts just my build, and I don't really know what that pot is 'supposed' to do, except from reports I dechped almost nothing.
Convention creates following, following creates convention.