piclist 2001\01\02\014708a >
Thread: Hard disk motor for "Propeller Clock"
www.piclist.com/techref/io/motors.htm?key=motor
flavicon
face BY : Bala Chandar email (remove spam text)



Peter wrote:
> Measure with a DVM. If there are two separate coils it is biphase if
> there are 3 coils and 1 common then it is 3 phase wye. The latter is
> more likely for small drives from portables. The L293 (? I am not sure
> about the numbers anymore - check http://www.st.com who makes them) can drive
> a bipolar motor. For 3 phase you need something else. Jinx's scheme
> may work for you in this case. The best solution is to reverse engineer
> the driver on the HDD board and 'short a wire to ground' as someone else
> has said ;-). However, you do this at your own risk.

> Bala, go to http://www.st.com enter 'L293' in the search window and a
> number of application notes will appear. The fifth is called 'The L297
> stepping motor controller'.
>
> good luck

Thanks a lot Peter, for your guidance. I will try my luck after checking out
the ST site.

I already have a L293, but I don't know for which particular motor it is
used.
Can someone tell me whether the L293 is useful for a bipolar stepper motor
(like the one removed from a 3.5" floppy drive)?

Bala

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


<FD55FC20D92DD311B29B0004AC4CC0DBEE6B77@bomsmxsusr01.bom.hmrag.com>

See also: www.piclist.com/techref/io/motors.htm?key=motor
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) Hard disk motor for "Propeller Clock"

month overview.

new search...