reverse log pots

z7yh · July 01, 2006, 12:54:59 PM

Does any one know where to get reverse audio pots with a knurled shaft? The ones at small bear look like they have a smooth shaft, and I can't find any reverse at mouser at all. thanks

markm · July 01, 2006, 03:40:57 PM

Don't think I've ever seen one of them there critters with a knurled shaft

MartyMart · July 01, 2006, 03:56:14 PM

I have some "knurled" dual 100KC pots off a mixer, they are about 10-12 years old and have "JP" stamped
on them .... dont know if that helps, they are from a "Studiomaster" mixing desk.

MM

z7yh · July 01, 2006, 04:41:07 PM

Oh well I guess I'll be using different knobs then. thanks

R.G. · July 01, 2006, 08:48:44 PM

Have you considered tapering a linear pot to reverse log?

Read "The Secret Life of Pots" at GEO, http://www.geofex.com

z7yh · July 01, 2006, 10:23:00 PM

Quote from: R.G. on July 01, 2006, 08:48:44 PM
Have you considered tapering a linear pot to reverse log?

Read "The Secret Life of Pots" at GEO, http://www.geofex.com

I skimmed through the first half of it about 2 months ago and forgot about it. I'll read the whole thing now. Your site is like a textbook, its full of lots of great information but I can only handle it in small doses, I start zoning out while reading textbook type material.

thanks dave

z7yh · July 02, 2006, 12:18:05 AM

.

z7yh · July 04, 2006, 12:42:28 PM

I edited this post I think this would work does anyone know for sure

would this make a 500k reverse audio?

000
000
000
0000000000000000
000 1m 000
0000000000000000
l l l
-56.2k- -4.53k-
l l l

newbie builder · July 04, 2006, 03:43:25 PM

Does anybody know the part # for mouser reverse log pots? (preferably screwdriver shaft) Or, what would be the correct resistor value to make a 500k linear pot reverse log....all the math in the article was a bit beyond me.
Thanks---

z7yh · July 04, 2006, 04:23:12 PM

mouser doesn't carry reverse pots.

Quote from: newbie builder on July 04, 2006, 03:43:25 PM
Does anybody know the part # for mouser reverse log pots? (preferably screwdriver shaft) Or, what would be the correct resistor value to make a 500k linear pot reverse log....all the math in the article was a bit beyond me.
Thanks---

SolderBoy · July 05, 2006, 01:43:14 AM

This idea might work for you...

http://www.diystompboxes.com/smfforum/index.php?topic=46762.0

SB

z7yh · July 06, 2006, 05:10:29 PM

I think it's right now, would this work for a 500k reverse log?

000
000
000
0000000000000000
000 500k 000
0000000000000000
l l l
-100k-
l l l

RaceDriver205 · July 06, 2006, 11:22:48 PM

I saw something on geofex about disassembling a pot, and removing the resistance element so it could be replaced.
Has anyone tried taking a log pot apart and actually flipping the element, to create a reverse log pot?
I think I might just try that now.

SolderBoy · July 06, 2006, 11:49:40 PM

Stupid Pot Tricks...

QuoteHas anyone tried taking a log pot apart and actually flipping the element

http://www.diystompboxes.com/smfforum/index.php?topic=46762.0

Works great.

SB

RaceDriver205 · July 07, 2006, 01:36:35 AM

NICE
I just tried it, but the wafer seemed to 'be one with' the leads, so I dont think I could remove it. I only tried a single-gang tho.
What brand did you use?

z7yh · July 07, 2006, 02:06:22 AM

Quote from: RaceDriver205 on July 07, 2006, 01:36:35 AM
NICE
I just tried it, but the wafer seemed to 'be one with' the leads, so I dont think I could remove it. I only tried a single-gang tho.
What brand did you use?

The one I opened the wafer was connected to the wiper. the only way to seperate them would ruin the pot. mine was an alpha 24mm pannel mount.

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reverse log pots