Power supply - 5V

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markus_kyroe
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Joined: Sun Aug 19, 2012 11:07 am

Power supply - 5V

Post by markus_kyroe »

Hi again,

another question. How do I determine which of the wires from the power supply that carry 5V? I found the data sheet here: http://www.seasonic.com/pdf/datasheet/N ... %20PFC.pdf

But cannot find any schematics of the wires. Is there a rule of thumb to know this? Cannot find any labels on the cables :-)

/Markus

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gfeliksdal
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Post by gfeliksdal »

The Dark red cables carry 5V. FYI the cable coloring of ATX connectors can be found here:
http://wiki.xtronics.com/index.php/ATX_Pinout
http://en.wikipedia.org/wiki/ATX

Kind regards,

Guillaume

markus_kyroe
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Joined: Sun Aug 19, 2012 11:07 am

Post by markus_kyroe »

Perfect.

Thanks!

Lioric
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Joined: Wed Aug 15, 2012 1:13 am

Post by Lioric »

ATX is a standard (ATX20 or ATX24)

But always:

"MEASURE TWICE, CUT ONCE" == USE a MULTIMETER (specially when working with unlabeled rails)

markus_kyroe
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Joined: Sun Aug 19, 2012 11:07 am

Post by markus_kyroe »

Cool. Not that familiar with electronics.

When I guided power to the board (yellow and black wires) does it then matter which of the wires i take? I took some from the plug on the picture...
Attachments
Black and yellow wires from ATX?
Black and yellow wires from ATX?

Kjetilei
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Location: Stavanger, Norway

Post by Kjetilei »

Hi Markus,

You should be able to use those wires since they are 12v and ground wires (but I make no promise/take no responsibility - use a multimeter to be sure).

Here you can see what wires I have used:
Used wires
Used wires

Lioric
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Joined: Wed Aug 15, 2012 1:13 am

Post by Lioric »

It should make no difference, as inside the PSU (at least on most of the standard PSUs) they connect to the same rail (be it 3.3/5v or 12v) and the rail is protected for current overload, so t is ok.

But why not just grab the wires from the ATX connector and have those other connectors uncut in case they might be needed for upcoming upgrades

*Get a cheap multimeter from a local store, it should be not more than a few (4-8) bucks and you will be on the safe side

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