If this is a cost sensitive application then get an optical, hall-effect or,
other position sensing device that does not have wiping contacts (as others
have already suggested). You will probably also need a unit with ball
bearings instead of bushings.

If you must use a potentiometer, you will most likely need a custom
manufactured unit. These can cost hundreds of dollars, may take many months
to obtain and, may have many thousands of dollars in engineering charges.

The New England Instrument division of Invensys can definitely make you
exactly what you need http://www.speed-position.invensys.com/default.asp. If
this is for a panel mounted user activated pot then the Invensys Clarostat
division may have a suitable product.

Paul

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Pang
> Sent: Monday, August 05, 2002 10:43 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: What is the estimated torque ?
>
>
> Hi all,
>
> Just received a sample for a low torque potentiometer. As i checked it, I
> found that it is not suitable for my application. The torque is not low
> enough eventhough the potentiometer is classified as low torque. As such I
> would like to enquire, what is the estimated torque such that I
> can turn the
> shaft of a potentiometer using only one finger? Or maybe in another way...
> what is the torque for a normal desktop fan? Is such a potentiometer (with
> that level of torque) available?
>
> Thanks..
>
> Best rgds,
> Pang
>
>

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