Author Topic: quick question about potentiometers  (Read 339 times)

IWouldLikeToDIY

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quick question about potentiometers
« on: December 29, 2017, 03:29:00 PM »
Hello everyone !

Ive just started my first project and and would need a 50kB, 10kA and 25kB ...
I have absolutelly NO IDEA what kA/B is ... Can someone tell me what resistance they got (ohms) ??

thank you , wish you a happy new year and pardon please my english ;)

Scruffie

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Re: quick question about potentiometers
« Reply #1 on: December 29, 2017, 03:34:01 PM »
50k (50,000 ohms) is the value, A/B/C is the taper. A is Logarithmic, B is Linear, C is Reverse Logarithmic.
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Zigcat

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Re: quick question about potentiometers
« Reply #2 on: December 29, 2017, 06:45:21 PM »
And W is wtf.

somnif

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Re: quick question about potentiometers
« Reply #3 on: December 29, 2017, 06:58:07 PM »
W is log from 0 to 5, reverse-log from 5 to 10. Fine control at the extremes, coarse control in the middle.

madbean

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Re: quick question about potentiometers
« Reply #4 on: December 29, 2017, 07:51:58 PM »
In very rare cases, A can be used for linear and B for Audio. Only seen that mentioned in the UK, though. For everyone else it is the other way round (99% of the time).
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EBK

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Re: quick question about potentiometers
« Reply #5 on: December 29, 2017, 10:42:47 PM »
In very rare cases, A can be used for linear and B for Audio. Only seen that mentioned in the UK, though. For everyone else it is the other way round (99% of the time).
Translation:  It's ok to feel a little confused.
Around 1 out of 100 people seem to inadvertently get the linear/audio, B/A thing backwards.  For instance, there was this one British guy.... :P
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peterc

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Re: quick question about potentiometers
« Reply #6 on: December 30, 2017, 12:27:40 AM »
Quote
In very rare cases, A can be used for linear and B for Audio. Only seen that mentioned in the UK, though.

I have only seen this on 2 brands of pots, Omeg and Piher. YMMV though....

Peter
Affiliation: bizzaraudio.com

Valid

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Re: quick question about potentiometers
« Reply #7 on: December 30, 2017, 04:05:15 AM »
Many DOD pedals have alpha pots that are marked with a W. But they donít seem to be
log->center<-rev.log.
Does anybody what they are?
B?


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