nedd help with how to identify potentiometer markings

[soupbone]

I need some help with how to identify pot markings.I know 100kA would be an audio taper,but i some more info on like reverse loger,logoryhthmic,and any others.Any help would be greatly appreciated!

[soupbone]

need help,not nedd help! (typo)

[blooze_man]

logarithmic is the same as audio. B is used for linear and C for reverse audio.

[soupbone]

Cool!What about reverse logger?

[jasperoosthoek]

Keep in mind that in Europe A and B are reversed . So log/audio pots in Philips radios are B.

As blooze_man said, audio means log, reverse audio is C so reverse log is C .

[teemuk]

The letter codes vary continent to continent and each manufacturer also has their own take on them. On top of that, there are also other kinds of tapers than plain linear, logarithmic, and (sometimes) reverse log. The logarithmic tapers can appear in different varying functions and then there's S-curves and alike. Manufacturers sometimes use overlapping coding systems to cover all that. In other words, you can't trust that there's a universal and standard coding system. The one that exists now has a lot of discrepancies.

If you know the brand you can check the mfg's datasheets and application notes to see what kind of letter coding they use, if you don't, then your best bet is simply to measure the potentiometers.

[cloudscapes]

how about reverse linear? 











(sorry, I had to)

[jasperoosthoek]

how about reverse linear? 

You definitely need one of those:

[soupbone]

Keep in mind that in Europe A and B are reversed . So log/audio pots in Philips radios are B.

As blooze_man said, audio means log, reverse audio is C so reverse log is C .

Cool.Thanks!

[soupbone]

The letter codes vary continent to continent and each manufacturer also has their own take on them. On top of that, there are also other kinds of tapers than plain linear, logarithmic, and (sometimes) reverse log. The logarithmic tapers can appear in different varying functions and then there's S-curves and alike. Manufacturers sometimes use overlapping coding systems to cover all that. In other words, you can't trust that there's a universal and standard coding system. The one that exists now has a lot of discrepancies.

If you know the brand you can check the mfg's datasheets and application notes to see what kind of letter coding they use, if you don't, then your best bet is simply to measure the potentiometers.

Thanks to you as well!