[sdiy] center tapped pots?

[Dave Magnuson]

Hi Steffen,

Center tapped pots have a fourth terminal connected to the center of the 
pot's resistive track.

I like to use them on voltage sources for pitch, etc.    You connect V+ and 
V- to the ends of the pot and ground to the center tap.  This assures you 
that you have 0V output at the center of the rotation  This is particularly 
nice if you have a center-detent; it makes sure that you don't have 0.2V or 
some odd error at the center position

Dave

----- Original Message ----- 
From: "Steffen" <stffn at dibidut.dk>
To: "peter edwards" <synth at casperelectronics.com>
Cc: "synth-diy" <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, April 10, 2007 9:48 AM
Subject: Re: [sdiy] center tapped pots?


>
> On 08/04/2007, at 3.32, peter edwards wrote:
>
>>  center tapped pots
>
> Sorry about my noobness and potential disturbens of this thread.
>
> But what is the trick with center tapped pots - how do they work?  I've 
> have searched my electronic book, and tried to search the web  where i 
> found an article <http://www.answers.com/topic/center-tap>  which doesn't, 
> unfortunately, cut it straight to me.
>
> Thanks.
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