Electronics > Beginners

Has anyone ever seen a potentiometer like this?

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oPossum:
A is log (audio) taper
B is linear taper

Wimberleytech:

--- Quote from: oPossum on February 11, 2020, 04:11:17 pm ---A is log (audio) taper
B is linear taper

--- End quote ---

Ahhh...shoulda been obvious  |O

IDEngineer:
Agreed on "reuse the bracket", securing it to the new pot in any number of ways. This might also allow you to move to a higher quality pot (conductive plastic, for example) if the original was cermet or some other garden variety.

This could also be Yet Another Example of why 3D printers are so darned useful. You could crank out a mounting bracket like that in under 30 minutes, tailored to your choice of replacement pot. This would separate the electrical decisions from the mechanical ones, allowing you the freedom to optimize both in whatever way suited you.

GromBeestje:

--- Quote from: oPossum on February 11, 2020, 04:11:17 pm ---A is log (audio) taper
B is linear taper

--- End quote ---

This holds true for American and Asian potmeters, but for European potmeters it's the other way around.
https://en.wikipedia.org/wiki/Potentiometer#Resistance%E2%80%93position_relationship:_%22taper%22

Gyro:

--- Quote from: GromBeestje on February 11, 2020, 07:18:00 pm ---
--- Quote from: oPossum on February 11, 2020, 04:11:17 pm ---A is log (audio) taper
B is linear taper

--- End quote ---

This holds true for American and Asian potmeters, but for European potmeters it's the other way around.
https://en.wikipedia.org/wiki/Potentiometer#Resistance%E2%80%93position_relationship:_%22taper%22

--- End quote ---

It's easy to check. Set the originl pot (which is presumably just noisy) to mid rotation and measure the resistance between the wiper and each end. If they are approximately equal then it's linear, if wildly different, then it's log.

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