xie67

yes i had been pondering this same thing for abit now.

the rig/toy in my signature is in need of a PSU for the fan operation on both 3x120mm for radiator cooling 1x120mm top exhaust 4x80mm rear exhaust (2each) 4x80mm side intake (2 each).

anyways i stripped the "500w" ( 12a on 12v how people can get fooled )psu that came with one of the cases and mounted it in the lower case behind the 3.25" bay. i have basicly done the same as in ive taken the pwr/on cable and attached it to a p/button sw and attached the other side to grnd comm.

then on the front panel i have installed a LED and connected it to the 12v rail for power status, it's all too simple.

yes i know it is another sw to operate on start up ( that i'll make three now ) but as it is only running the fan's i dont see it as such a big issue. and i'm sure most on the forum would have the brains to depress another switch on startup.

connecting yr two psu's in parallel to switch of the same circuit is a risk as the psu's power up/start up differently even if same model and make, which could lead to back surges to mobo.

did not want to take the risk, much better to have as independant systems

yet you could safely switch both PSU's together by use of a relay circuit but hey i'm lazy

Bangas

so is this ok?
(attached pic showing configuration)

(errm... sorry about the crappy MSpaint pic...)

Attached Thumbnails

 

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el uno y solamente... Rig Vid: Rig not finished yet; are they ever?

3400.69 MHz (226.71 * 15)
407.79MHz OC on air

iwannaplaygames

i've been running this set pu for a month orso w ith no noticed ill affects. but i got my mobo for <$50 bucks and if it deie i wount be hart broken. what kind of relay setup are we talking abut and are these back surges a defanet or onyl a "well... it could happen" i'm in the recon fase of building a new rig and my new board will be a little better ( asus A8N-SLI ) so ide like to find out about any problems/solutions with a multi PSU rig

iwannaplaygames

sounds like a spark maker but if it works it works

Leo

Cool... Some 3 or 4 years ago i had the (at that time bright) idea to use 2 psus. Unfortunatelly, at that time they weren´t so stable as they are today and i never could get a stable system (the voltages were so different that a computer could never work...)

M0KUJINKEN

since i can't find any male pint, (checked radioshak-result:none) so i connect te two slots with a short wire
and wrap pieces of tapes to secure the wire.

does this look safe? alto the wire isn't as thick as the psu colored wires but it's about as thick.

it dont look like the extra psu is powering much here except fans and lights.
i dont understand when u guys mention video card. do u power the video card with the mod psu?

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systemaxd

Yes the setup you have is perfectly safe since the wire needed to jump the green and black wires only carry 0.015 amps, in more aproprite terms you are controling a transistor which needs VERY low amps to work and the volts on the green wire are only 5V. So if you had a paper clip/staple that would work fine.

As for what the extra psu you can use to power anything mainly fans, hdd's, and gfx cards. The reason for the extra psu for some is to take the load of amps off the main psu's 12V rail which may in turn allow of a higher overclock.

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Build log of Rocktfish case mod Water fish

SpookedJunglist

As systemaxd stated its perfectly fine

I used a staple, Just make sure no strands of copper stray into another pin.

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Snip3rWarrior

Can i cut the wires short and cover the ends with electrical tape so that there aren't 30 wires coming out the psu, but only the ones i need... 4 pin molexs??

i would then connect the green and black wire in side (solder) instead of having to connect it with another wire outisde, and the other wires either Un-solder from the board or cut them short so there only inside the psu..

SpookedJunglist

Sorry that i didnt catch it yes that would be fine. but make sure none of them cross while doing this because you could short out a CAP and cause a little spark what you might want to do would be to cut the wires individually from the PCB in the PSU and then solder a panel switch green and black then install the panel switch into the PSUs case that would look awesome

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