computer fan wiring question

Discussion in 'OT Technology' started by Mr Bruce Wayne, Sep 17, 2005.

  1. i have 4 computer fans at 12v. Im using AC's with 120vAC input and 12vDC output, splicing the red and black wires to the AC.

    is this the best way to use the power.. ( is the yellow wire needed ?)

    can i use a larger AC with a 48vDC output to run all four fans ?
    if its more than 48vDC output... would that fry the fans .. im guessing it would did i guess right? lower volts would just make the fans run weaker correct ?

    IF SOMEONE COULD CLARIFY I WISH U MUCH KARMA FOR THE HELP> THANKS !
     
  2. lowfat

    lowfat 24/Mac/SciFi/PC Crew OT Supporter

    Joined:
    Oct 27, 2003
    Messages:
    63,949
    Likes Received:
    0
    Location:
    Grande Prairie, AB, Can
    that sure doesn't make any sense.
     
  3. 4W4K3

    4W4K3 New Member

    Joined:
    Dec 31, 2004
    Messages:
    5,108
    Likes Received:
    0
    Location:
    TX
    that's your sensor wire, used to monitor fan RPM's. not necessary unless you like to monitor that kind of stuff for noise reduction and/or cooling performance.

    lower volts slow down the fan, RPM wise. you wont get as many CFM's.

    i'm not sure of exact power, but too much will definetly fry the fans. if not instantly, the motor will overheat and die. you might be looking at PSU problems as well.
     

Share This Page