RE: [CAD_CAM_EDM_DRO] Computer Power Supply

I use an ATX power supply. I use 5V to power an HC11 and I use the 3.3V
rail to drive the motors. It would not stay on because I didn't have
anything on the 12V rail. I connected an old hard drive up to it and it
works fine now. I'm a little surprised it works because a hard drive really
doesn't use much power on the 12V rail once it's spun up. I have 4 steppers
on it that can each pull 3A / coil. So you usually need to have some
balance on rails but how much is dependant on the power supply.

> -----Original Message-----
> From: pappyfrance [mailto:john.papin@...]
> Sent: Wednesday, March 26, 2003 10:30 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Computer Power Supply
>
>
> I have a compaq computer power supply I salvaged and want to use.
> However I can't figure it out. I know you need to keep a load on the
> 5V line to get it turn on and to output the other voltages. I found
> the gray wire to ground does the trick, the fan comes on and the
> other voltages are there. However as soon as I apply a load it kicks
> out and I have to shut it off wait a couple of seconds and turn it
> back on. The load is 12V .22A so it can't be that. I have put
> various resitances across the 5V from 0 - 450K ohms. Same result.
> Any ideas.
>
>
> Part No 286008-001 Model PS-4151-6CF
> Output
> 5V 17A
> 3.3V 6A
> 12V 4A
> 5VSB 0.02A
> -12V 1A.
>
> 165W Max Output
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com,
> wanliker@..., timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to
> reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this
> to be a sister site to the CCED group, as many of the same
> members are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
> POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO
> EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>