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'[OT] Stepper motor drivers'
1999\05\05@101946 by Lawrence Lile

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I'm researching some stepper motor drivers.  Specifically I'm looking into
chips that might lend themselves to microstepping - i.e. some kind of
current control.  The motors I'm using have a max. current of about 1 Amp.

So far I keep coming up with stuff like the ol'  '293 or the LMD18200 that
have an Oh So HAndy (sarcasm intended) current output. Taking this analog
signal and amplifying it and a.d'ing it might cost more than the motor
controller did in the first place!   I'm trying to stay away from a/d inputs
on my PIC, just a cheap digital part.

I'm looking for parts that have a 4 bit current limit input.  I'm also
wanting to know which parts people have found to be cost effective in the
past.   Any ideas?

1999\05\07@132226 by Lawrence Lile

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-----Original Message-----
From: spam_OUTSLandasTakeThisOuTspamaol.com <.....SLandasKILLspamspam@spam@aol.com>
To: lilelspamKILLspamtoastmaster.com <.....lilelKILLspamspam.....toastmaster.com>
Date: Thursday, May 06, 1999 8:19 PM
Subject: Re: [OT] Stepper motor drivers


>look at the 2916B from Allegro.

Thanks!

Can't seem to locate Allegro as a semiconductor manufacturer on the Web.
Got a link?  Have they changed thier name recently?

1999\05\07@151327 by Eric Schlaepfer

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Allegro
(Formerly Sprague Semiconductor Group, now fully owned by the Sanken
Electric Co.)

Allegro MicroSystems Inc.
115 Northeast Cutoff, Box 15036
Worcester, MA 01615, USA
tel: +1-508-853-5000
fax: +1-508-853-3353
fax: +1-508-853-7861 or this?
tel: +44-932-253-355 - Europe

http://www.allegromicro.com/ General
http://www.allegromicro.com/control/prodline.htm Data sheets


(Got this off the Chip Directory, at http://www.xs4all.nl/~ganswijk/chipdir/
. Very handy page.)

Later,

Eric



-----A sunspot caused you to write this message-----
From: Lawrence Lile <EraseMElilelspam_OUTspamTakeThisOuTTOASTMASTER.COM>
To: PICLISTspamspam_OUTMITVMA.MIT.EDU <@spam@PICLISTKILLspamspamMITVMA.MIT.EDU>
Date: Friday, May 07, 1999 10:22 AM
Subject: Re: [OT] Stepper motor drivers


{Quote hidden}

1999\05\08@063125 by Tom Handley

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  Lawrence, the last link I have for Allegro is:

     http://www.allegromicro.com

  - Tom

At 12:17 PM 5/7/99 -0500, Lawrence Lile wrote:
{Quote hidden}

1999\05\08@213113 by Wagner Lipnharski

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I really don't know what happens when somebody says that can't find some
website on the net, as the Allegro example.  Yahoo, Altavista, HotBot,
Infoseek and others search sites have plenty of information about those
companies. For example, Allegro is the second on the list when searching
Altavista with the argument "Allegro + Semiconductors"...  Internet
looks like as a huge library, not knowing how to use a search engine is
the same as entering a library in a complete dark, some how loosing 99%
of what the web offers.

Wagner

1999\05\08@214353 by David Olson

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A trick I've used to see if there are, let's say, vendors for "Hall Sensors"
is to go to Arrow's site: http://www.arrow.com and do their Line Card search. They
have a huge list of categories that can be further refined into the various
manufacturers/suppliers.

For instance:

"Hall Sensors" gets you: "Allegro"

I've found a bunch of manufactures like Allegro and Temic by this method.
Arrow is also nice enough to have URLs with most of the companies.

-DO

> {Original Message removed}

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