how to power a 80mm fan without a PSU? 9v battery or wall power?

C

cheezies

[H]ard|Gawd
Joined
Feb 8, 2003
Messages
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I bought a cold cathode kit long ago which came with molex connector that connects to a wall outlet. For some odd reason though, this power cable won't power my fan. The LED indicates on, but the fan doesn't spin.

I created a ghetto notebook cooler out of a video card box, but I need means to power the fan. It could be either a 9v battery or perhaps USB power? I'm afraid the drain on the USB might kill my notebook though.
 
I took an old cell phone charger and cut off the end, then split the wires and shoved them into the connector. It worked.:confused:
 
The grounding pin the fan uses is not connected on most brick molex power supplies... so the easy solution is just take the fan's molex connector and switch 2 ground pins... MAKE SURE YOU KNOW WHICH 2 ARE THE GROUND PINS!!! (you should be switching the 2 middle pins)
 
switched the molex pins with a small flat head screwdriver and now it works just fine! will post pics in a little bit.
 
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