CPU Cooling Fan Wiring

[freak_brain]

Can anyone tell me how to wire a cpu cooling fan? Three wires.....

yellow
red
black


Thanks
-Allen

[sendkeys]

red is to the 12v wire black is to the ground.

yellow is the rpm wire only used if you plug it into the board.
most the time
-----------------------------------------
yellow on the power supply is 12volt ,black is ground. red is 5



so red (fan)to yellow-black to black.

I would use the wires used for harddrives/floppys. Stay away from the main board wires. you dont want to add noise.

[freak_brain]

Wow!! Got to love this site, superfast response to your questions. Thanks sendkeys, I do appreciate it!!


-Allen

[sendkeys]

np happy to help when i can.

[Imagineering]

If you intend using the Fan in your Power Supply, give a thought to connecting it across your smoothing Capacitors, (dropping the Voltage with a Regulator if needed), as this assists in bleeding the Voltage from them on shutdown. A nice safe 'Zero Volts' remain, the next time that you open the PSU Case.

[freak_brain]

I was planning to but thanks for the information...


-Allen