[sdiy] Tapped Pots?

[thx1138]

On 7/3/09 5:38 AM, "Tom Bugs" <admin at bugbrand.co.uk> wrote:

> 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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I seem to remember that CTS pots had a détente in them on the Oberheim
SEM1-A Expander module.

I believe it also had a switch on the pot for BandPass mode.

It has been a few years since I worked on this platform. I left Oberheim
around 1978-79 time frame.

I believe CTS is still in business.

Just a thought.

Regards,

Terry Shultz