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Circuitbenders Forum => Circuitbending discussion => Topic started by: parricide on April 09, 2011, 10:56:38 PM

Title: substitute for 100 kOhm log pot?
Post by: parricide on April 09, 2011, 10:56:38 PM

i am going to be using a 100 kOhm log pot for a gain control, but unfortunately rapid is all out right now and ive already built my shopping list on there.
i dont want to have to redo my shopping list on another site and the stock will not be in for a couple of months.
is there a reasonable substitute?
maybe a linear pot?
and how much difference to the volume would using a different log pot make? like, say, 22k or 47k?


thanks

Title: Re: substitute for 100 kOhm log pot?
Post by: Circuitbenders on April 09, 2011, 11:27:00 PM

you could use one of these. They're surprisingly good for plastic pots.

http://www.rapidonline.com/sku/Electronic-Components/Resistors-Potentiometer/Control-Potentiometers/Miniature-16mm-potentiometers/65225/65-1430 (http://www.rapidonline.com/sku/Electronic-Components/Resistors-Potentiometer/Control-Potentiometers/Miniature-16mm-potentiometers/65225/65-1430)

If you used a linear pot about 80% of its effect would be in about 20% of its rotation.

Title: Re: substitute for 100 kOhm log pot?
Post by: parricide on April 10, 2011, 12:13:52 AM

thanks for the quick response
the problem with that pot is the depth of the shaft. but while typing that i thought to myself, i could cut it down.
:) idiot!

thanks again CB i appreciate the help