[sdiy] Tapped Pots?

[m.bareille at free.fr]

Hi,

Use them for bipolar input attenuators with 0 centered (-,0,+). They allow to
have a real zero ( =cut off completly the incoming signal)at exactly 12 O'clock
position. Connect the 3 pot's legs as usual , and the center tapper ( the 4th
lug) to the ground. I use many of them into my modular instead of classic pots
...

Cheers,

Marc B.

Papareil Synth Labs
http://m.bareille.free.fr



Selon Tom Bugs <admin at bugbrand.co.uk>:

> Hi all,
>
> I'm wondering if anyone can shed some light on pots that have an extra
> lug for a tap point.
> I've not been able to locate any real info about - i) how the resistance
> is 'arranged' within this setup ii) typical usage
> - have checked several datasheets and done some googling, but no luck yet.
>
> The main thing that makes me look at them is for bipolar attenuators --
> I've used some centre-detent pots before but these tend to have some
> slop in the middle and I generally have to use an onboard trimmer to
> dial in the centre null point.
> Would tapped pots help?
>
> Cheers!
> Tom / BugBrand
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