1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Trigering max speed manually

Discussion in 'Overclocking & Cooling' started by saulyx, Dec 28, 2010.

  1. saulyx New Member

    Joined:
    Dec 28, 2010
    Messages:
    3 (0.00/day)
    Thanks Received:
    0
    Hey guys, so I got couple of fans laying around(Gigabite E121225SL) 12v,

    Nothing amazing, I'm powering them with 10v phone charger, however I see 3 sables, black red and yellow, black and red are clear, however im guessing the yellow is to adjust the speed(motherboard does that), question is, how do I replicate motherboard interaction with the fan? to make it run at 100%


    Please help,
    Thanks
  2. newtekie1

    newtekie1 Semi-Retired Folder

    Joined:
    Nov 22, 2005
    Messages:
    19,664 (6.23/day)
    Thanks Received:
    5,838
    With 3-pin fans the third wire is used for speed sensing only. It is not used to control the fan speed. The motherboard would vary the voltage supplied to the fan on the 12v+ wire to adjust the fan speed in this case.
    Crunching for Team TPU
  3. saulyx New Member

    Joined:
    Dec 28, 2010
    Messages:
    3 (0.00/day)
    Thanks Received:
    0
    Wow, fast reply! Thanks, so the slow looking speed is because im missing 2 volts?

    What would happen if I linked 3 fans paralel? so + to - to + to - to + to - and then hooked that up to 26v? would it work?

    Thanks
  4. newtekie1

    newtekie1 Semi-Retired Folder

    Joined:
    Nov 22, 2005
    Messages:
    19,664 (6.23/day)
    Thanks Received:
    5,838
    I believe that would end up frying the first or second fan in the circuit.
    Crunching for Team TPU
  5. saulyx New Member

    Joined:
    Dec 28, 2010
    Messages:
    3 (0.00/day)
    Thanks Received:
    0
    how come it works with LEDs?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)

Share This Page