Can two power supplies be fitted in ONE case? and HOW?

Hi.

Can two power supplies be fitted in ONE huge ATX case? and HOW?

would be some work, but it got the room
BUT, how do I make it power up?

or should I use a old AT PSU rather than an atx?

I ain't afraid of splicing and solderin

Kind regards.
Jaak

Jaak, I asked a similar question recently, had planned to use AT to power the MOBO & ATXfor all else. was told (don't rmrmber by whom) that this might cause 'power management' problems. I'll follow this thread to see if you get a better answer, like HOW, as I, too, have the room, and am not afraid of a soldering iron.

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Live like you'll die tomorrow - learn like you'll live forever.
_Junker

[This message has been edited by Junker (edited 08-16-2001).]

Hi Jaak, Yes, you can do it but why? Are you building a super computer by chance? Both supplies would be tied to the same source, so where do you come out ahead?

I think I remember the thread Junker is referring to. And if it is Bistro and Train were in on it.

Different subject. Will email you later. https://discussions.virtualdr.com/

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goose,

Never heard of experimenting? Trying/doing something because it can be done?
I've thought about it myself, since I have a couple of spare PSs, but I alway stranded at the question of how to control the "secondary" as this is not directly linked to the mobo's ATX plug. It WOULD have to require some soldering (which I do, but not in a way that will earn me any medals - but it works..).
I then give up and enjoy myself ordering a huge Enermax instead... https://discussions.virtualdr.com/

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Karl, Denmark
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"..and may The Force be with you - too..."

I go along with kallikru.
But maybe this will give you food for thought.

Now do you have a AC/DC INDUCTIVE AMP PROBE or simular device, to verify that you need the extra amperage. Case fans can be AC with a , 10Amp contact 1500 ohm 12VDC souce requirement selenoid [Radio Shack and the likes have them. But forget what they call them]. Power it from the mobo/ps and get the AC from the ps switch, or seperate circuit altogether.

Let's see , I am thinking you will need to tie the two together in the power on and shutdown circuits in the ps's so that they are parallel. Thus powering up and shuting down both at the same time.

Hope this floats. https://discussions.virtualdr.com/

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[This message has been edited by Train (edited 08-16-2001).]

To tie the two together, all you need do is change the pc on-off switch from spst to dpst. That would be Radio Shack's terminology.

yrralrellim
That would seem to do it the easy way https://discussions.virtualdr.com/

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Hi Kallikru, Not against experimenting. I was just wondering why.

What if you had a back up battery tied to the second power supply where when commercial power was lost you would automatically switch over? I like the idea of backups in hardware as well as software/files. https://discussions.virtualdr.com/

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Jaak,

See the link I gave in my post in this thread a while back.

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DrMDJ
They done redone the website, so your link is broken. DARN

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Geez, everyone is changing stuff. Thanks for letting me know Train.

OK, thank goodness for the Google cache. Go to Google and type +pc-mod +atx in the search box. When the results come back choose the first hit, and select the cached version of the link. That should get the article I'm trying to direct Jaak to.

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[This message has been edited by DrMDJ (edited 08-16-2001).]

Hi jtdoom,

If you put in two supplies you won't have the load of the motherboard or the signals it provides on the "Power Good" line. Both are critical to the proper operation of the power supply.

The peripherals only us the +5 V and +12 V outputs -12 V and -5 V are only sent to the motherboard. Connecting those outputs together will cause the regulation circuts to fight each other, and probably blow both supplies and the motherboard. Leaving one off will burn up the supply that has no load.

On the test bench we us a hefty dropping resistor to provide the necessary load when operating a supply without it's peripherals, but that generates a lot of heat.

If you just want to be able to add more peripherals there are supplies made to do that. They usually cone in boxes that have no motherboard. For example, I have a Compaq SCSI drive box that is built to hold up to 7 SCSI drives. That power supply would work because it only provides the +12 V and +5 V used by the peripherals. There are also some single and double drive boxes that work the same way.

The question is, with power supplies so cheap, why bother?

Good Luck, https://discussions.virtualdr.com/

DA

DrMDJ
Guess we will have to wait. https://discussions.virtualdr.com/
Google works fine. But pc-mod https://discussions.virtualdr.com/

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When the hit comes up, click the "cached" word down near the bottom of the few lines listed (between pc-mod.com/howto/atx/ - 5k and - similar pages)

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[This message has been edited by DrMDJ (edited 08-16-2001).]

Better yet, try this (backdoor) link I just created: 2 supplies.

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