# potentiometers log/lin?

#### kubeek

Joined Sep 20, 2005
5,795
In a datasheet of an effect there are pots written like 100k/A and 50k/B. I am not sure which one is logaritmic, because:
1)in a magazine was written that A is log and B is linear
2)i have a logaritmic pot on which is written 10k B
3)in the datasheet the outgoing audio signal is going from A pot, which should probably be logaritmic
4)in a datasheet of some manufacter is written that A is linear, B is log.

#### Sebi

Joined Sep 24, 2005
59
The "A" marked pot is linear, the "B" is logarithmic.

#### Gorgon

Joined Aug 14, 2005
113
Originally posted by kubeek@Sep 20 2005, 05:30 PM
In a datasheet of an effect there are pots written like 100k/A and 50k/B. I am not sure which one is logaritmic, because:
1)in a magazine was written that A is log and B is linear
2)i have a logaritmic pot on which is written 10k B
3)in the datasheet the outgoing audio signal is going from A pot, which should probably be logaritmic
4)in a datasheet of some manufacter is written that A is linear, B is log.

[post=10474]Quoted post[/post]​

Hi,

In addition to 'A' and 'B' as Sebi said, you also have antilogarithmic 'C'. Reversed logarithmic curve.

TOK

#### pebe

Joined Oct 11, 2004
626
Originally posted by Gorgon@Sep 26 2005, 10:37 PM
Hi,

In addition to 'A' and 'B' as Sebi said, you also have antilogarithmic 'C'. Reversed logarithmic curve.

TOK
[post=10626]Quoted post[/post]​
..and semilog and antisemilog.

#### Overclocked2300

Joined Apr 24, 2005
124
What is the difference between log and linear pots?

#### Gorgon

Joined Aug 14, 2005
113
Originally posted by Overclocked2300@Sep 27 2005, 04:06 AM
What is the difference between log and linear pots?
[post=10631]Quoted post[/post]​
Hi,
Look at this datasheet, page 55 (starts on p53) Diagram display all curves. (A, B and C)

http://www.elfa.se/pdf/64/06426217.pdf

What we talk about is the resistance value, related to viper position.

TOK