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Xtreme Cooling LN2, Dry Ice, Peltiers, etc... All the usual suspects

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Unread 12-21-2000, 09:34 PM   #1
Chill-X
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Default 5V dummy load - what to use?

Well I found out that in order to get more than 1 amp out of the 12V line at 12V on my AT PS, I need a load on the 5V line.

So, what should I use as a dummy load (Need about 4-6 amps at 5V)? I currently grabbed all the 12V lights I could find and hooked them to 5V - that only got me about 3.5 amps, and not very practical. But I did get 7 amps out at about 11.9V that way.

Any ideas? Hopefully any cheap and/or creative ones?
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Unread 12-21-2000, 10:51 PM   #2
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Someone once suggested a lightbulb to me...
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Unread 12-21-2000, 11:59 PM   #3
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Someone sudjested a Rheostat to me...
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Unread 12-22-2000, 12:13 PM   #4
Chill-X
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Now that I think about it, do some vehicles use a 6V power source (like motorcycles?)?

Anyway, I'll look for some high power 6V bulbs today.

I was already thinking of using a resistance load - but that doesn't do anything else useful.

Any other ideas?
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Unread 12-22-2000, 07:19 PM   #5
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how about some neon lights?

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Unread 12-22-2000, 10:41 PM   #6
Chill-X
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Well I picked up some 25W 1 ohm resistors today - they burn off plenty of power - especially if I use two of them in parallel. But they get damn hot! Duh! They come in a ceramic package - wonder why (scarcastically). I wonder if oven elements are made out similar materials.

In order to keep the temps on those tolerable (so I don't burn myself), I strapped two onto a celeron slot one heatsink I had laying around, and added a fan. But where should I put this heat producing package now? I was thinking inside the P/S, but it's just a bit too big.

But I know 50W of lights would be hot as well. Oh well.
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Unread 12-23-2000, 01:01 AM   #7
Joe
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Slap on a 5V Pelt and cool yer Chipset with it ( I am pondering that right now for DH3's setup)
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Unread 12-23-2000, 05:06 PM   #8
Chill-X
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Well I did see that RadioShack has 8V Max TECs in theinr newest catalog (special order), but are rather expensive. I suppose these will work at 5V and do a decent cooling job, but where can I get some more cheaply?
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Unread 12-23-2000, 11:40 PM   #9
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Tedist?

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Unread 01-04-2001, 09:00 PM   #10
Kevin
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Hmmm. Who thought of 5v pelts ?
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Originally posted by Joe:
Slap on a 5V Pelt and cool yer Chipset with it ( I am pondering that right now for DH3's setup)
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Unread 01-04-2001, 09:33 PM   #11
mfpmax
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You can proably get low voltage TECs cheap from some surplus site.

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Unread 01-04-2001, 11:19 PM   #12
Austin
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I tried 2 hard drives on a 300 watt AT power supply. The 122 Watt pelt does not get enough juice to perform better than without the pelt. Take a look at this power supply: http://www.mpja.com/product.asp?product=12611+PS
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