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Thread ID: 45625 2004-05-28 09:44:00 Power supplies (running other things off them) vrx22 (1997) Press F1
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239970 2004-05-28 09:44:00 hey guys

this doesnt have much to do with computers but here goes anyway. i was wondering if you can run somthing that was designed for a car off you computer power supply, i am know that you have to get the right voltages, but i dont know about current. i am looking to buy a travel cooler/warmer from DSE and i want to use it in my room (i live in a student village in hamiton) i want to know how much current it will draw, and if there will be too much current (or not enugh) coming out of the computer power supply

thanks for any help

you can see this travel cooler/warmer here:

www.dse.co.nz

cheers James
vrx22 (1997)
239971 2004-05-28 10:02:00 Try this link (www.dse.co.nz)

Note: DSE links are too long to paste onto the forum, they break up halfway :D

You can get 240V/12V DC adapters that have a cigarette lighter socket on the end to plug these type of things into. If not at DSE, maybe someone like Repco or Supa Cheap Autos.

J
Jester (13)
239972 2004-05-28 10:18:00 It draws 3 Amps, which is no problem for a PC power supply. Just gat the 12Volt connection, may not go too well on the 5Volt one :) Pheonix (280)
239973 2004-05-28 21:34:00 3 amps? that too huge for my powersupply... Growly (6)
239974 2004-05-28 23:49:00 I don't think so Growly, the 12 volt supply on a PC power supply should handle that easily. From the figures below you will see that an ATX psu is able to supply up to 18 amps at +12 volts (depending on the overall power rating).

Note also that there is a minimum current requirement for the 12 volts otherwise the supply will not operate correctly


DC Ouputs:
+5v 35A , +12v 18A (min .8A), +3.3v 28A, -5v .5A , -12v 1.0A, +5v SB 2.0A. These are all maximum ratings apart from the +12 volts.

Cheers

Billy 8-{)
Billy T (70)
239975 2004-05-29 03:31:00 The Peltier element is probably designed to run on a "13.8V" supply rather than 12V exactly. It won't hurt it, but it will have a bit less grunt--- some I've seen figures for work best at 15V.

You might be able to adjust the computer supply to give more volts... the regulated supply is the 5V one, and the others go up and down with that.
Graham L (2)
239976 2004-05-29 07:56:00 thanks guys

i think i will purchase this travel cool/warmer and run it off my old ATX psu. you all have been a huge help, a big thumbs up to all of you :D

thanks again

cheers

James
vrx22 (1997)
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