[sdiy] Resolution of analogue potentiometers?

[Ove Ridé]

Consider a wirewound potentiometer:
http://upload.wikimedia.org/wikipedia/commons/c/c3/Pot1.jpg
By its nature it has a ribbed surface and the wiper will tend to be
attracted to discrete values. Obviously you don't use those in audio,
but if smaller potentiometers of some type has a similar composition
that might give a similar effect.

However, it's more likely that precision means the minimum distance
you can move the wiper due to surface retention inside the pot.

On 12 February 2013 03:10, Paul Anderson <wackyvorlon at me.com> wrote:
> I'm not sure I understand your question? They're analog, so the change is continuous.
>
> --------
> Paul Anderson -- VE3HOP
>
> On 2013-02-11, at 9:06 PM, Michael Zacherl <sdiy-mz01 at blauwurf.info> wrote:
>
>> Hi, I thought this already has been discussed but couldn't find the thread:
>> How's the actual resolution of the resistive track of an analogue potentiometer
>> specified? On some data sheets I read "< 0.1°" for a rotative pot.
>>
>> for instance,
>> in terms of pitch control over a very wide range, using a multiturn pot or trimmer,
>> where are the limits for the resistive tracks and pots at all?
>> Technically speaking, leaving practical aspects aside for a moment.
>>
>> Thanks, Michael.
>>
>>
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-- 
/Ove

Blog: <http://blog.gg8.se/>

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