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Author Topic: Guide: Powering Up a PSU  (Read 58464 times)

General Gossip

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Guide: Powering Up a PSU
« Reply #20 on: August 07, 2001, 09:57:00 AM »

on AT-psus there is a switch to turn on the power... this switch can be replaced with a relay, wich is then powered by another
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brutal

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Guide: Powering Up a PSU
« Reply #21 on: August 07, 2001, 11:38:00 AM »

Quote

On 2001-08-07 05:18, General Gossip wrote:
an alternative way to do this is to connect the green wire on your second psu to the green wire on the psu that connects to the motherboard... I did this with mine, and it works great.. plus they power up/shuts down  simultaneously
of course this will "ruin" both psus a bit, but who cares?


General lets take this a step futher, since you can "boot" the secondary psu up with the primary, assuming that you are running fans and lights with the second psu, is there any way to control the shutdown of the second psu based on a tempeture switch, kinda like the dc radiator fans on european cars that run until the radiator reaches a certain tempeture? or maybe have it on a timer for 5 mins, etc.

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General Gossip

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Guide: Powering Up a PSU
« Reply #22 on: August 07, 2001, 12:23:00 PM »

I dont know... I use my second psu to power my drives

I suppose u could just get the right kind of relay.. but im not sure
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Vinny_Knoxville

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Guide: Powering Up a PSU
« Reply #23 on: August 11, 2001, 12:28:00 AM »

Good article with good pictures,  wish it had been around 2 weeks ago, i was adding another fan to an extra PSU when it was still on and it sparked and died, i think the fuse may have went, any ideas?
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GideonX

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Guide: Powering Up a PSU
« Reply #24 on: August 11, 2001, 07:56:00 AM »

well...if u plugged it in while it was on...most doodoo PSUs will die :)
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Vlurk

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Guide: Powering Up a PSU
« Reply #25 on: August 22, 2001, 04:54:00 AM »

Does someone know the answer to the Caleb_2 problem, because I got an "almost" identical problem. The difference however is that mine work pretty well using the green wire (even though I only get 10,55V on the 12V). So I tried to power it up using the purple wire (since I read in a post that it coul allow more power too pass through) and that's were I get the same problem as Caleb: a high pitched buzz. I tried to connect the pw_good at the same time and it didn't do anything more, just that damn buzz. If someone could help me on this, I would be gratefull because it could ("maybe") allow me to resolve another problem: whenever I add my Delta 80mm 68cfm to that second power supply, the power supply just stop fonctionning. Now let me elaborate a little bit more on this...  When I power it up, the fan start spinning for about a second and then they all stop. All I have to do is to switch it off and then back on to experience the same thing untill I remove the Delta fan.

Now I know this isn't a problem with my fan's wiring, since I can get it to work on my main power supply. Strange isn't it? Even more when considering that I only connected about 10 fans and a digital doc on it yet (and it is a 250W PSU that's supposed to output 9A on the 12V line).
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winterstick

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Guide: Powering Up a PSU
« Reply #26 on: August 22, 2001, 10:00:00 AM »

instead of using a wire you might want to try a resistor, a small one, to limit the current.  I think I know what your talking about with the buzz. when I was in physic the teacher cut off the end of an electrical cord and soldered them together.  he had it setup to displate that when current ran through teh wire, they would attraact.  But when he plugged it in, the wiring in the walls would make a rumbling sound, and he blew out 3 outlets with his contraption.
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otaconx

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Guide: Powering Up a PSU
« Reply #27 on: August 22, 2001, 01:30:00 PM »

dudes....

one of my spare psus had a purple wire where the green wire is on gideon's diagram... works the same... some no-names don't use the standard coloring, i guess, just use the positions he pointed out and it should work... i've got this no-name workin' the fans and stuff, and it's workin' great
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brutal

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Guide: Powering Up a PSU
« Reply #28 on: August 22, 2001, 03:01:00 PM »

otaconx, good point, an atx connector is a standard and each pin has a specific role regardless of the color or the wire.
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Antacus

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Guide: Powering Up a PSU
« Reply #29 on: August 22, 2001, 03:40:00 PM »

Found this link for the wiremap of an atx psu:

http://home.c2i.net/ghisdal/a4ktower/bilder/atx_pinout.jpg
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