AT vs XT PSU difference ?
Robert E. Watts
I'm getting ready to pitch a massive pile of PSU's, but want to keep a few
for future "projects".
As I was going through these, it occurs to me that there might be a
difference between AT and XT PSU's, but I can't remember what it is, no can
I find it searching.
Anyone know the difference, if any ? Or will an AT PSU work on an XT board
?
Thanks !
bobwatts
Marten Kemp
An AT-style PSU will work with an XT board - the AT just has an
extra 12v (?) supply pin and the corresponding connector on the
XT board isn't connected to anything.
The actual AT (5170 Big Red Switch) PSUs are taller than the PC
and XT (5150 and 5160) so they won't fit in the standard PC or XT
cases.
Note: please e-mail me about the disposition of some
working XT-sized PSUs. The reply-to address is valid
if you know what planet this is.
--
-- Marten Kemp (Fix ISP to reply)
You can't help being ignorant 'cause there's always
something you don't know; what you can't be is stupid.
Cheers
In article <efcaa$4bebf2ab$483167e1$30...@FUSE.NET>, bobw...@nowhere.com
says...
AFAIR, the difference was the extra power good cable connected to +5vDC
(??) return, the motherboard power connectors physical shape and the box
physical size are different.
before you ditch the psu,s try to salvage some fans and extra
electronics from them some of those parts are hard to find to fix other
psu, also the ferrite cores worth salvaging if you're into ham :-)
> Thanks !
>
> bobwatts
Moussa
--
The information contained in this post is copyright of
the poster, and specifically may not be published in,
or used by http://www.jlaforums.com
Robert E. Watts
( and others that have replied) :-)
Turns out, I probably don't have any of the original big ol box PSU's from
IBM PC, XT, etc. , but I was mainly concerned about using "clone" PSU's on
any future project I might think up. This happens from time to time. :-)
I *always* scavenge "stuff" from stuff when pitching, for example the fans
and items that you mentioned Moussa. I DO have a pile of clone PSU's that
will probably go, or maybe I'm going to have a "Computer Yard Sale" on EartH
here in a couple of weeks. I literally have a pickup truck of stuff that has
to go.
I wish someone lived close to Cincy EartH to collect up some IBM PS/2 MCA
stuff real cheap. I really don't want to ship/throw away any of that. It has
"collector value" . :-)
Martin, I replied to your EartH email address, but didn't know if you got
it.
bobwatts
--
bobwatts
Watts Carburetion Service
WhizzBang Computers
" collector of Asian transfat plastic trinkets ! "
EartH // KlaXXoN
"Cheers" <mous...@hotmail.com> wrote in message
news:MPG.26588c2e3...@192.168.3.119...
Marten Kemp
> Hi Martin and Moussa !
>
> ( and others that have replied) :-)
>
> Turns out, I probably don't have any of the original big ol box PSU's from
> IBM PC, XT, etc. , but I was mainly concerned about using "clone" PSU's on
> any future project I might think up. This happens from time to time. :-)
>
> I *always* scavenge "stuff" from stuff when pitching, for example the fans
> and items that you mentioned Moussa. I DO have a pile of clone PSU's that
> will probably go, or maybe I'm going to have a "Computer Yard Sale" on EartH
> here in a couple of weeks. I literally have a pickup truck of stuff that has
> to go.
>
> I wish someone lived close to Cincy EartH to collect up some IBM PS/2 MCA
> stuff real cheap. I really don't want to ship/throw away any of that. It has
> "collector value" . :-)
>
> Martin, I replied to your EartH email address, but didn't know if you got
> it.
E-link probably ate it.
My main interest is in a PSU for an IBM XT/286. It's probably
going to be hard to find 'cause I need the extra AT-style power
connector in an XT form-factor. I think I'll just replace innards
of the original with those of a more modern tower-type PSU. The
completed project will look kinda original from the outside.
Robert E. Watts
"Marten Kemp" <marte...@thisplanet-link.net> wrote in message news:hsmjk5
>>
>> Martin, I replied to your EartH email address, but didn't know if you got
>> it.
>
> E-link probably ate it.
>
I get that a lot.
It seems that my off world "equipment" is not always welcome with local
EartH ISP's.
> My main interest is in a PSU for an IBM XT/286.
I hate to think how many of those I have thrown away. You too probably.
:-)
It's probably
> going to be hard to find 'cause I need the extra AT-style power
> connector in an XT form-factor. I think I'll just replace innards
> of the original with those of a more modern tower-type PSU. The
> completed project will look kinda original from the outside.
>
Probably be best, and no one will know. I do projects like that all the
time, but usually return stuff to "stock" after a while. :-)
My interest in Packard Bell stuff ( for no sane reason ) lends me to do
projects like this. Matter of fact, I'm planning on turning an old "Art
Deco" case into a late model i7 Intel computer, and there will be no outside
indication this has been done, *IF* I can pull it off. Cooling is a major
issue. That, and I need to find another Art Deco case that has a regular ATX
board in it. I have only ever seen one, and I have it. ( as opposed to the
usual LPX stuff ) Don't want to "modify" that one, although it *can * be
done (mainly) in such a way that it can be returned to original. I have done
this a few times in the past
Marten Kemp
> Hi Marten !
>
> "Marten Kemp"<marte...@thisplanet-link.net> wrote in message news:hsmjk5
>>>
>>> Martin, I replied to your EartH email address, but didn't know if you got
>>> it.
>>
>> E-link probably ate it.
>
> I get that a lot.
> It seems that my off world "equipment" is not always welcome with local
> EartH ISP's.
>
>> My main interest is in a PSU for an IBM XT/286.
>
> I hate to think how many of those I have thrown away. You too probably.
If we kept everything that we wind up wanting later... <grin>
> It's probably
>> going to be hard to find 'cause I need the extra AT-style power
>> connector in an XT form-factor. I think I'll just replace innards
>> of the original with those of a more modern tower-type PSU. The
>> completed project will look kinda original from the outside.
>
> Probably be best, and no one will know. I do projects like that all the
> time, but usually return stuff to "stock" after a while. :-)
> My interest in Packard Bell stuff ( for no sane reason ) lends me to do
> projects like this. Matter of fact, I'm planning on turning an old "Art
> Deco" case into a late model i7 Intel computer, and there will be no outside
> indication this has been done, *IF* I can pull it off. Cooling is a major
> issue. That, and I need to find another Art Deco case that has a regular ATX
> board in it. I have only ever seen one, and I have it. ( as opposed to the
> usual LPX stuff ) Don't want to "modify" that one, although it *can * be
> done (mainly) in such a way that it can be returned to original. I have done
> this a few times in the past
I have an old dual socket 2 700mHz Xeon (whacking big square
CPUs). The CPUs are too tall for it to fit in any reasonable
tower case and I don't have any server cases that'll fit it.
I was thinking about building a plywood box to put it in, with
a plexiglas window on the front. With a bunch of wood stain
and some metallic copper tape I just might pull off a steampunk
look. Maybe with a model steam engine on the top "connected"
to one of the cooling fans.
Robert E. Watts
"Marten Kemp" <marte...@thisplanet-link.net> wrote in message
>
> I have an old dual socket 2 700mHz Xeon (whacking big square
> CPUs). The CPUs are too tall for it to fit in any reasonable
> tower case and I don't have any server cases that'll fit it.
> I was thinking about building a plywood box to put it in, with
> a plexiglas window on the front. With a bunch of wood stain
> and some metallic copper tape I just might pull off a steampunk
> look. Maybe with a model steam engine on the top "connected"
> to one of the cooling fans.
( You mean Slot cartridge CPU's ? Yep, those old PIII Xeons are HUGE ! )
I'm sure that would look neato, but sounds like a lot of work. Setting up
all the mounts, cooling holes, mounting the board, PSU, setting up the
slots, mounting drives, blah blah..........
That will be a large undertaking. I have seen ( and probably have some
here ) massive cases that should contain just about anything. Matter of
fact, I have some dual PPro boards in some pretty big (clone) cases that
have lots of room leftover.
What board to you have exactly ? I'm intrigued.
Marten Kemp
> Hi Marten !
>
> "Marten Kemp"<marte...@thisplanet-link.net> wrote in message
>>
>> I have an old dual socket 2 700mHz Xeon (whacking big square
>> CPUs). The CPUs are too tall for it to fit in any reasonable
>> tower case and I don't have any server cases that'll fit it.
>> I was thinking about building a plywood box to put it in, with
>> a plexiglas window on the front. With a bunch of wood stain
>> and some metallic copper tape I just might pull off a steampunk
>> look. Maybe with a model steam engine on the top "connected"
>> to one of the cooling fans.
>
> ( You mean Slot cartridge CPU's ? Yep, those old PIII Xeons are HUGE ! )
>
> I'm sure that would look neato, but sounds like a lot of work. Setting up
> all the mounts, cooling holes, mounting the board, PSU, setting up the
> slots, mounting drives, blah blah..........
>
> That will be a large undertaking. I have seen ( and probably have some
> here ) massive cases that should contain just about anything. Matter of
> fact, I have some dual PPro boards in some pretty big (clone) cases that
> have lots of room leftover.
>
> What board to you have exactly ? I'm intrigued.
The only marking is E186194, which matches some Intel boards.
Googling found the manual at
https://support.intergraph.com/itservices/sysdocs/workstation/dha031600.pdf
(mind the wrap).
I think it came out of an IBM Intellistation Z Pro but the IBM
dox don't seem to match the board.
I'd need a 12x13x6 box for the board. The plexi top would need
a hinged section over the slot area. I have lots of miscellaneous
ironmongery to mount drives in and I think they and the PSU could
be mounted externally in little wooden boxes, or maybe one box for
drives and the PSU. I have enough large server-type fans to mount
on the ends of the box to provide sufficient airflow.
Yeah, it might never happen but it'd be way cool if I could
pull it off.