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Projects => General Questions => Topic started by: powerplayj on January 25, 2020, 08:57:27 AM

Title: 1k reverse audio pot alternative
Post by: powerplayj on January 25, 2020, 08:57:27 AM
Upon building the Woodstork, a 9mm, right angle PC mount pot with plastic shaft seems to be unobtainable.  The regular 1ck shaft pot is too thick  for a flush mount.  I would use a 1k audio taper and wire it backwards, to get fuzz on the ccw end of the rotation but smallbear doesn't have these (1ka)..  Aside from putting this in a larger inclosure and using non pcb mounted pots, what other options do I have?
Title: Re: 1k reverse audio pot alternative
Post by: jimilee on January 25, 2020, 09:25:59 AM
Have any other values like a 2k or 5k?


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Title: Re: 1k reverse audio pot alternative
Post by: Bio77 on January 25, 2020, 02:07:28 PM
You can change the taper of a linear pot to audio or revise audio by putting a resistor with 1/5 the resistance of your pot across pins 2 and 3 or 1 and 2, depending on your circuit.  You have to determine which leg of the pot on the hot side and then decide from there. Here's a link that explains in more detail.

http://www.geofex.com/Article_Folders/potsecrets/potscret.htm
Title: Re: 1k reverse audio pot alternative
Post by: powerplayj on January 25, 2020, 06:38:04 PM


Quote from: jimilee on January 25, 2020, 09:25:59 AM
Have any other values like a 2k or 5k?

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100k is the lowest reverse audio...5k, the lowest audio for this type pot
Title: Re: 1k reverse audio pot alternative
Post by: jimilee on January 25, 2020, 07:15:30 PM
Quote from: powerplayj on January 25, 2020, 06:38:04 PM


Quote from: jimilee on January 25, 2020, 09:25:59 AM
Have any other values like a 2k or 5k?

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100k is the lowest reverse audio...5k, the lowest audio for this type pot
A5k wires backwards will work, throw 5k resistor on it.


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