[sdiy] Formula for Audio & Log-taper pots?

[Cynthia Webster]

Hi Glen!

Have a look here at "The Secret Life of Pots"

http://www.geofex.com/Article_Folders/potsecrets/potscret.htm

Best Wishes!

Cynthia



on 4/14/04 2:38 PM, Glen at mclilith at charter.net wrote:

> I've read that audio taper pots have 15% resistance at the half-way point
> in their rotation, and that log taper pots have 10% resistance at the
> half-way point. Is this generally correct? I seem to remember that there
> was more than one taper being used by some engineers for audio, but I think
> these are the common ones.
> 
> Does anyone know of a more precise way to describe the "curve" of either
> the resistance vs rotation, or more importantly, the attenuation vs
> rotation? I would really like to find a formula to calculate either the
> resistance or the signal attenuation for a given amount of rotation.
> 
> thanks,
> Glen
> 
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