computer power supplies in parallel?

ruffneck_12 · Postby **ruffneck_12** » November 29th, 2008, 2:05 am

someone told me 2 take d both positive from 2 separate power supplies an check it wit a volt meter and if u get close to 0v it safe to hook up in parallel...........can I hook up 3?

nere · Postby **nere** » November 29th, 2008, 5:27 am

try it and let us know what happened

eitech · Postby **eitech** » November 29th, 2008, 7:21 am

dude, what is ur application?

Postby **r3iXmann** » November 29th, 2008, 9:51 am

some crazy fellas on this site yes..

bushwakka · Postby **bushwakka** » November 29th, 2008, 9:54 am

eitech wrote:dude, what is ur application?

he prob tryin to get more power since u cya find no 700 W PS here

hydroep · Postby **hydroep** » November 29th, 2008, 9:58 am

You can't do that without building some sort of bridging/coupling circuit.

TK! · Postby **TK!** » November 29th, 2008, 9:59 am

ruffneck_12 wrote:someone told me 2 take d both positive from 2 separate power supplies an check it wit a volt meter and if u get close to 0v it safe to hook up in parallel...........can I hook up 3?

...pzzzfffttt.... *pow*

pugboy · Postby **pugboy** » November 29th, 2008, 10:14 am

if you trying ratch like that, at least put some diodes so the current dont pass between them

Sky · Postby **Sky** » November 29th, 2008, 1:41 pm

no it go wuk yunno. But Even tho they'll share an AC earth, they would not have the same DC ground unless they're identical down to the atom. If you hook up both + you'll also need to bridge their grounds. Then you won't get 0 volts. you'll get ~12 and ~5 like you're supposed to on the molex ends. But the current would double. You can't do that on the cpu voltage.

So put them in parallel for the molex connectors alone....one would be under more load from the mobo and they'll be uneven....bzzzt*

Do the same but put both on the mobo, cpu go bzzt

Why not just build another pc to host whatever else you hadda use jed? Thing cheap. mobo ram cpu thas all. Want a case? i have ole cases lyin around. Better yet, hear what. You have a problem. you have too many components and not enough power for them right? Try the rambo, and when all the components blow, you wont have need to power so much.

eitech · Postby **eitech** » November 29th, 2008, 1:48 pm

yea ting too cheap to be tryin ratch..lol

buzz · Postby **buzz** » November 29th, 2008, 1:49 pm

$200 fire extinguisher @ pricemart

Sky · Postby **Sky** » November 29th, 2008, 1:59 pm

buzz wrote:$200 fire extinguisher @ pricemart

RaptoR will ride a shot for you eh

Advertising for other people.

buzz · Postby **buzz** » November 29th, 2008, 2:01 pm

i mean pm raptor for extingishers

:skurry:

Postby **AllTrac** » November 29th, 2008, 5:24 pm

yea it works.

wagonrunner · Postby **wagonrunner** » November 29th, 2008, 5:26 pm

AllTrac wrote:yea it works.

that's what i know.
i eh understand why the others giving so much dotish round d way advice, about what go blow, or get damaged.

villain · Postby **villain** » November 29th, 2008, 7:13 pm

yuh pc case have room to do that? :lol:

ruffneck_12 · Postby **ruffneck_12** » November 29th, 2008, 8:41 pm

sumbody a kno does fix computers an he was gonna throw way some power supplies so I take dem an change d siezed up fan an it wukkin, I hav 3 identical power supplies 12A @ 12V and I wanna run car audio stuff (amp, crossove etc...) will i get 36A?

buzz · Postby **buzz** » November 29th, 2008, 8:46 pm

36A ?

ruffneck_12 · Postby **ruffneck_12** » November 29th, 2008, 8:46 pm

jus guessin

ruffneck_12 · Postby **ruffneck_12** » November 29th, 2008, 8:55 pm

no diode or nuttin?

ruffneck_12 · Postby **ruffneck_12** » November 29th, 2008, 8:58 pm

and yuh jus hadda connect d green an d black together rite?

megadoc1 · Postby **megadoc1** » November 29th, 2008, 8:59 pm

just doo eet

megadoc1 · Postby **megadoc1** » November 29th, 2008, 9:05 pm

but the man say identical ps
how the wires different?

ruffneck_12 · Postby **ruffneck_12** » December 1st, 2008, 11:06 am

na i lazy 2 open my wonderful container of delights..........i try it wit adapters and nuttin happen so yay :!:

Terabyte · Postby **Terabyte** » December 1st, 2008, 11:42 am

pioneer wrote:no u don't need it...when Alltrac did mine he jus connected de wires n tha was it

wagonrunner · Postby **wagonrunner** » December 1st, 2008, 2:20 pm

pioneer,
the thing wukking boy, he jess eh want others to know how bess it is.

ruffneck_12 · Postby **ruffneck_12** » June 2nd, 2011, 12:32 am

forgot I made this thread oui , yea Pioneer it worked perfectly, thanks everyone

ran this thing for hours and it handles the pressure with ease, the middle PSU in this pic failed the other day and started giving out 18V

swapped it out with another spare I had and it runs nicely.
Also took out the piece of metal with the holes in it where all the 6AWG wires lead to and made a neat little distribution block from an old Air Condition breaker

only bad thing is that the max voltage is 11.8 when the amp is connected with no music playing and gets as low as 10V when trying to play at high volume.

Added a relay because I was bored

the orange cylinders are an array of capacitors adding up to 0.03F, good enuff for a 30W amp

Planning to upgrade the PSUs and hack the circuit for the 16 pin IC to increase the voltage of the 12V rail, and I'll try to do it neater this time

Postby **nervewrecker** » June 2nd, 2011, 12:39 am

what in gods name?

stev · Postby **stev** » June 2nd, 2011, 12:43 am

nervewrecker wrote:what in gods name?

its alive!!!!

cool though..i learn sumtin new...google ftw

Sky · Postby **Sky** » June 2nd, 2011, 1:23 am

wtf? jed why didnt you just buy a 12v. 10 amp psu?
Those arent designed for constant peak load and will always fail after a while. after a few more swaps ull regret this choice. and you WILL get fedup of those wires. trust me.