motorized potentiometers

A

Andrew Gabriel

Guest
Does anyone know a source of motorized potentiometers,
or a small motor unit which can be added to a regular
potentiometer? I also want to be able to turn the pot
by hand ideally. This is a 2-gang 100k linear pot
(actually, value probably doesn't matter much, but
should be linear, not log).

Would be particularly interested in a UK supplier,
but pointers elsewhere welcome too.

--
Andrew Gabriel
 
andrew@cucumber.demon.co.uk (Andrew Gabriel) wrote:
Does anyone know a source of motorized potentiometers,
Click to expand...
Well, Sony uses them in some stereo receivers, so you could get the
manual for one and check out their parts department. Dunno if they
are linear, though there may be some balance pots that are...

Other stereo manufacturers may have similar parts...

Of course you've checked out the 1260 hits at
http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=linear+motorized+potentiometer

8*)

--
William Smith w<underscore>smith@compusmiths.com
ComputerSmiths Consulting, Inc. www.compusmiths.com
 
"Andrew Gabriel" <andrew@cucumber.demon.co.uk> wrote in message
news:blube0$q8a$4@new-usenet.uk.sun.com...
Does anyone know a source of motorized potentiometers,
or a small motor unit which can be added to a regular
potentiometer?
Click to expand...
Digikey or Mouser (don't remember which, maybe both) list some.
 
Andrew Gabriel wrote:
Does anyone know a source of motorized potentiometers,
or a small motor unit which can be added to a regular
potentiometer? I also want to be able to turn the pot
by hand ideally. This is a 2-gang 100k linear pot
(actually, value probably doesn't matter much, but
should be linear, not log).

Would be particularly interested in a UK supplier,
but pointers elsewhere welcome too.

--
Andrew Gabriel
Click to expand...
All Electronics has motorized 10 and 20 K linear pots.
http://www.allelectronics.com/cgi-bin/category.cgi

Perhaps you could adapt one of them to your needs.
 
It there some of those with encoder also ?
;-)

This could be fun to play with !


ehsjr@bellatlantic.net wrote:

Andrew Gabriel wrote:

Does anyone know a source of motorized potentiometers,
or a small motor unit which can be added to a regular
potentiometer? I also want to be able to turn the pot
by hand ideally. This is a 2-gang 100k linear pot
(actually, value probably doesn't matter much, but
should be linear, not log).

Would be particularly interested in a UK supplier,
but pointers elsewhere welcome too.

--
Andrew Gabriel


All Electronics has motorized 10 and 20 K linear pots.
http://www.allelectronics.com/cgi-bin/category.cgi

Perhaps you could adapt one of them to your needs.
Click to expand...
 
In article <pkOgb.54814$ti3.1436157@wagner.videotron.net>,
rgb <rgb@blah.com> writes:
It there some of those with encoder also ?
Click to expand...
Actually, I'm intending to use the second of the dual as
an encoder. The application where I want to use this currently
uses just a single manual pot, and I want to add remote
control, but also electrically isolated from the original
equipment.

--
Andrew Gabriel
 
That seems to be a good way, you will need only mux(if y have many pot)
and adc to scan current settings. I was also thinking about some
digital encoders ... probably easy to fix on the shaft but surely more
pricey :)



Andrew Gabriel wrote:

In article <pkOgb.54814$ti3.1436157@wagner.videotron.net>,
rgb <rgb@blah.com> writes:

It there some of those with encoder also ?


Actually, I'm intending to use the second of the dual as
an encoder. The application where I want to use this currently
uses just a single manual pot, and I want to add remote
control, but also electrically isolated from the original
equipment.
Click to expand...
 
Andrew Gabriel wrote:
In article <pkOgb.54814$ti3.1436157@wagner.videotron.net>,
rgb <rgb@blah.com> writes:

It there some of those with encoder also ?

Actually, I'm intending to use the second of the dual as
an encoder. The application where I want to use this currently
uses just a single manual pot, and I want to add remote
control, but also electrically isolated from the original
equipment.

--
Andrew Gabriel
Click to expand...
There's a dual 20K on the web page I posted. When
I clicked on the url I posted to verify that, I got
an error message, so here's a different way. Click
on the url below, then enter motorized in the search
box and click search.
http://www.allelectronics.com/
 
In article <3F84D4C0.BDE3A329@bellatlantic.net>,
ehsjr@bellatlantic.net writes:
There's a dual 20K on the web page I posted. When
I clicked on the url I posted to verify that, I got
an error message, so here's a different way. Click
on the url below, then enter motorized in the search
box and click search.
http://www.allelectronics.com/
Click to expand...
Thanks.
Incidently, what does the 'TAPER' mean here?
I saw that used in the description of most of the
devices I looked up.

--
Andrew Gabriel
 
andrew@cucumber.demon.co.uk (Andrew Gabriel) wrote:
Incidently, what does the 'TAPER' mean here?
Click to expand...
It's how the resistance varies as you turn the pot. Linear would be
used for setting voltages, audio is logarithmic, as your ears aren't
linear (you hear small differences better when it's quiet).

--
William Smith w<underscore>smith@compusmiths.com
ComputerSmiths Consulting, Inc. www.compusmiths.com
 
In article <16maovg3anp529a18fsbqa5ou1huugt0ek@4ax.com>,
William P.N. Smith <w<underscore>smith@compusmiths.com> writes:
andrew@cucumber.demon.co.uk (Andrew Gabriel) wrote:
Incidently, what does the 'TAPER' mean here?

It's how the resistance varies as you turn the pot. Linear would be
used for setting voltages, audio is logarithmic, as your ears aren't
linear (you hear small differences better when it's quiet).
Click to expand...
Ah, got it.
I knew what Linear and Log meant -- I thought 'Taper'
was some other unrelated property like a funny shaped
drive shaft or something ;-)

--
Andrew Gabriel
 
Whereas On 9 Oct 2003 14:32:42 GMT, andrew@cucumber.demon.co.uk
(Andrew Gabriel) scribbled:
, I thus relpy:
In article <16maovg3anp529a18fsbqa5ou1huugt0ek@4ax.com>,
William P.N. Smith <w<underscore>smith@compusmiths.com> writes:
andrew@cucumber.demon.co.uk (Andrew Gabriel) wrote:
Incidently, what does the 'TAPER' mean here?

It's how the resistance varies as you turn the pot. Linear would be
used for setting voltages, audio is logarithmic, as your ears aren't
linear (you hear small differences better when it's quiet).

Ah, got it.
I knew what Linear and Log meant -- I thought 'Taper'
was some other unrelated property like a funny shaped
drive shaft or something ;-)
Thats better than thinking a push-pull amp had knobs you pulled and
Click to expand...
pushed to adjust them, instead of tutning them.
--
Gary J. Tait . Email is at yahoo.com ; ID:classicsat
 
Thats better than thinking a push-pull amp had knobs you pulled and
pushed to adjust them, instead of tutning them.
Click to expand...
I always thought it would be funny to add motorized pots and a small micro,
to an existing commercial amp.

That way, when someone messes with your settings, the amp will dial them
back after a short delay. You could even have it start messing with the
user, if he continues to mess with the amp. :)
 
Dave VanHorn wrote:
Thats better than thinking a push-pull amp had knobs you pulled and
pushed to adjust them, instead of tutning them.

I always thought it would be funny to add motorized pots and a small micro,
to an existing commercial amp.

That way, when someone messes with your settings, the amp will dial them
back after a short delay. You could even have it start messing with the
user, if he continues to mess with the amp. :)
Click to expand...
Use metal knobs on plastic shaft extenders. Then, the second time it
is messed with, you get a good tingle! ;-)
--


Michael A. Terrell
Central Florida
 
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