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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: How to determine the " common " of a Teac Motor taken out from a 5
1/4 disk drive??
Date: Sun, 19 Jan 2003 14:48:45 GMT
NNTP-Posting-Date: Sun, 19 Jan 2003 06:48:45 PST
> I am working on this project
> Look at the extreme left side of the schematics.
> I paint leg 1 with "white correction fluid" and let it dry.
> leg 1 connect to red PIN of a digital meter and leg 2 give 75.5 ohm
> leg 1 connect to red PIN of a digital meter and leg 3 give 73.9 ohm
> leg 1 connect to red PIN of a digital meter and leg 4 give 74.2 ohm
> leg 1 connect to red PIN of a digital meter and leg 5 give 73.5 ohm
> leg 2 connect to red PIN of a digital meter and leg 3 give 147.2 ohm
> leg 2 connect to red PIN of a digital meter and leg 4 give 147.1 ohm +/-
> leg 3 connect to red PIN of a digital meter and leg 4 give 147.1 ohm +/-
> leg 4 connect to red PIN of a digital meter and leg 5 give 147.1 ohm +/-
> The components have already soldered. But "nothing moves" at all.
> I connected the max 232 according to this url
> Any help appreciated.
> Chuck Simmons wrote in message
> > Laplace wrote:
> > >
> > > http://www.cfsl.mb.ca/cfsl/best_p/Anx_d5.html this is what I used, teac
> > > part no 14769070-90
> > > This is how a determine the "common" of a stepper motor for a Stepper
> > > project. The board is built but the stepper motor does not move at all.
> > > There may be a lot of problem. I need to track down unknown/known
> > > one by one.
So it does have the two center taps wired together.
Connect a voltage between 1 and some other wire say 2. The motor should
have a strong detent position. Now try the voltage on 2 and each of the
other wires. The detent position will be the same when you find the
other end of that winding. Then follow the schematic you have
considering 1 to be A for that winding. The other winding has 1 as B.
From there you need to varify the logic. A 'scope would be handy for
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons email@example.com
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