Heres a tip... Sometimes a cell phone charger just does not meet your power needs, especially if you are running multiple fans or even just a couple of fans of different voltages. Use a Laptop Computer Charger instead.

Pros: Allows for multiple fans, allows for larger fans.

Cons: More detailed electrical knowledge required.

NOTE: Never work with power supply plugged in. Follow all normal safety precautions dealing with the use, tampering, and repair of electrical circutry. Do not attempt this at home, these directions are for educational purposes ONLY.

That Said...

After you find a suitable Laptop (Notebook) Computer power supply/battery charger (confused as to where to find one, try salvation army, local electroninc store sell universal ones, or online) Cut off the end that plugs into the computer right at the plug and expose the wires.

Depending upon the type of charger you have, you will see either 2 or 4 wires)

For 2 wire chargers hook all of your PC fan black wires together and then all of the red wires together. Connect one of the wires from the charger to the combined black wires, and the other to the combined red wires. Not allowing the red and black wires to touch, test the fans to see if they spin in the correct direction (most fans have an arrow on them indicating air flow and/or spin direction or both) On the off chance that the fans do not spin correctly, reverse the connection of the 2 wires to the red and black wires on the fans.

For 4 Wire Chargers
Hook all of the PC fan black wires together
hook all the red ones together
In 4 wire charges the other set of wires is usually a +5v circut not a +12v circut that most PC Fans Use.
If you do not have any 5 volt fans carefully cover up and isolate this circut so that it does not accidentally short out your system.
If you DO have some 5 volt fans you may hook them up to the second set of wires at this time (why I do not know but hey what ever floats your boat)
The Yellow wire is usually the 12 volt system here, NOT the Red as commonly mistaken but you should always make sure first. Hooking up the fans is usually enough to tell. If the fans spin exceptionally slow then that is the 5 volt circut.
P.S. there are 2 black wires either of them can be used for either circut in most cases (again check before taping or permenantly protecting and covering the connections).

Again this method can handle more and larger fans without causing them to spin at a slower rate as has been reported by some users.

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sounds good, but what about just using a PSU out of a older (lower wattage) PC, even a 100W PSU could run tons of PC fans at high RPM's and the wiring would be simple.

what do u do with the yellow wire

The yellow wire can be cut, it won't be of any use to you.

-Alex

i cant get mine working

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Everything is say is a lie, All made up.

Most, if not all PC fans I've ever messed with were 12V. (one exception I think would have been an old CPU fan like 486/PI days)

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The Temporary Relief Assistant Trailer Park Supervisor. Carmelisous Jornl :: ElecUsageCostsCalc (now with carbon footprint) :: FloroTubeCompendium ::

I was just about to Do up a DIY about this, went to check if it had been done, first page lol I was like damn. But this isn't what I had in mine, Yes I use a desktop PC power supply, I neva though about a laptop PS, that would look better and put less heat, prolly more reliable to... I have a HELLA old like B&W 386 GIANT "laptop" somewhere, I think I'll do try that with it and post it to. I'm still gonna make my DIY cheap exausht system. with pics.... that helps allot of people.

What should I do to that laptop lol?
throw it really high?
run it over?
burn it?
blow it up?


all of the ablove? in order?

hmm this sounds like fun I'm gonna video tap it and put it up on server. who want to see? suggestions please, I might do it tomorrow
Ever seen the youtube videos of ppl destroying brand new 360's? idoits.... spoiled rich kids...
I guess destroying a worthless laptop isnt that great. but fuck I'm still gona do it and it will be cool. I promise. Fuck too if id ever destroy my 360, or my shitty, but not near that shitty, laptop

Dont know If i have something to literally blow it up right now but I can do everyhting else lol, oh wait...
wow that sent me on a whole thing, Is there a place to post something like that here lol?

anyway watch for my DIY thread late tonight.

whats ur prob exacly mikeeees, what u using?

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I have been using laptop power supplies for awhile. Since I am the admin where I work I usually do not have a shortage of them. I found this a while back that should work as well, still may need to do some mods but there is something to start with. CS 110v AC to 12v DC Power Supply with 4 Pin Molex Adapter

sorry i dont understand do you have pics?

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Those laptop supplies get hot...(specially that big ol thing).... mebbe if you put your fan in front of it you can keep it cool.... gotta help somewhere.