Low-torque Potentiometer

N

nsswaga

Guest
Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..
 
In article <1131512713.816350.9670@g47g2000cwa.googlegroups.com>,
nsswaga <dexterdexter@gmail.com> wrote:
Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..
Click to expand...

Do you need to handle a lot of rotational cycles? If so, a servo-pot
may be necessary.

Otherwise you might look into pots which use conductive plastic elements.
There used to be some Clarostat pots with pretty low torques.

Maybe you can describe your application a bit more...

-frank
--
 
http://www.midoriamerica.com/r_g_conductive_1.html





"nsswaga" <dexterdexter@gmail.com> wrote in message
news:1131512713.816350.9670@g47g2000cwa.googlegroups.com...
Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..
Click to expand...
 
Thanks Frank! I just need around 10,000 or more cycles.

I'll be using this to measure the height of a stack of paper. A bar
connected to the potentiometer pivots according to the height of the
paper. This bar should pivot freely, thus the need of a low-torque
potentiometer, and the tip should rest on top of the stack of the
paper. The bar should exert a negligible force on the paper which
means, the bar should is a lightweight plastic.
 
On 8 Nov 2005 21:05:13 -0800, "nsswaga" <dexterdexter@gmail.com>
wrote:

Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..
Click to expand...
What's it for?
Have you considered an optical device?
It's almost impossible to advise you if we are required to possess
telepathy.
 
On Sat, 12 Nov 2005 13:53:29 +1030, Michael Gray
<fleetg@newsguy.spam.com> wrote:

On 8 Nov 2005 21:05:13 -0800, "nsswaga" <dexterdexter@gmail.com
wrote:

Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..

What's it for?
Have you considered an optical device?
It's almost impossible to advise you if we are required to possess
telepathy.
Click to expand...
And yet, this may be "bait" in one of the guvmint's "black programs." If
anybody comes up with the correct answer then it may be evidence of an
exploitable telepathic capability.

'Scuse me -- gotta run -- a Crown Vic just pulled up and a couple of
guys in dark suits are coming to the front door ...

--
Rich Webb Norfolk, VA
 
nsswaga wrote:

Thanks Frank! I just need around 10,000 or more cycles.

I'll be using this to measure the height of a stack of paper. A bar
connected to the potentiometer pivots according to the height of the
paper. This bar should pivot freely, thus the need of a low-torque
potentiometer, and the tip should rest on top of the stack of the
paper. The bar should exert a negligible force on the paper which
means, the bar should is a lightweight plastic.
Click to expand...
You could use a hall-effect device near a magnet that moves. These are
pretty cheap although some of them have fairly small output voltages.

http://www.allegromicro.com/hall/linear.asp

Chris
 
On Sat, 12 Nov 2005 04:21:48 GMT, Rich Webb
<bbew.ar@mapson.nozirev.ten> wrote:

On Sat, 12 Nov 2005 13:53:29 +1030, Michael Gray
fleetg@newsguy.spam.com> wrote:

On 8 Nov 2005 21:05:13 -0800, "nsswaga" <dexterdexter@gmail.com
wrote:

Hi!

I'm looking for a potentiometer or trimmer with a low torque. It
doesn't necessarily be really accurate like the ones used in wind vanes
and other measuring devices.

Could anyone help me with this? Do you know of any companies that
manufacture these?

Really appreciate the help. I've been googling this for hours but all I
get are high-precision potentiometers that are too expensive..

What's it for?
Have you considered an optical device?
It's almost impossible to advise you if we are required to possess
telepathy.

And yet, this may be "bait" in one of the guvmint's "black programs." If
anybody comes up with the correct answer then it may be evidence of an
exploitable telepathic capability.

'Scuse me -- gotta run -- a Crown Vic just pulled up and a couple of
guys in dark suits are coming to the front door ...
Click to expand...
I knew that would happen...
 
I've already answered that question in response to Frank Miles'
quesiton. I'm not sure if you've access to that posting so anyway, I'm
resposting it for your info:

----------------------

Thanks Frank! I just need around 10,000 or more cycles.


I'll be using this to measure the height of a stack of paper. A bar
connected to the potentiometer pivots according to the height of the
paper. This bar should pivot freely, thus the need of a low-torque
potentiometer, and the tip should rest on top of the stack of the
paper. The bar should exert a negligible force on the paper which
means, the bar should is a lightweight plastic.
 
LOL.. nope, just a harmless citizen here coming up with some ideas..
 
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