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- Potentiometer types
February 22, 2006, 8:59 am
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I am trying to establish the different taper types of potentiometers
(varistors) that have been commonly available in the past or presently.
This is what I have established so far:
Linear -- no taper aka B-taper (previously called A-taper!)
Modified linear -- aka S-taper having an S shaped taper characteristic
Clockwise Audio -- log taper aka A-taper (previously called C-taper!)
Counter-clockwise Audio -- antilog taper (previously called F-taper)
Quasi-log/bilinear -- approximate log taper consisting of two linear
?? - type G-taper?
?? - type W-taper?
Is there a definitive reference for these naming conventions for
differently specified taper laws?
Re: Potentiometer types
** Varistors are voltage dependant devices used for transient suppression
** Not very likely, codes varied from maker to maker and country to country.
I have bought reverse log pots made in Australia by IRH labelled "E" -
while someYank makers called them " RA" ( reverse audio ? )
The Taiwanese called log pots " D " for decades - Alps label their
reverse log pots "RD".
Many UK made pots are labelled with "log" and "lin" .
I just centre the wiper and test the damn things with a DMM if in any doubt.
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