AC/DC Pc Fan + Potentiometer.

Discussion in 'OT Technology' started by SquallRm, Oct 12, 2008.

  1. SquallRm

    SquallRm New Member

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    Jerz, ya dig
    I must be an idiot because I've been burning the potentiometers time and time again.

    I have a 12v ac/dc adapter 1500mA
    and a 10k ohm potentiometer.
    The fan is 12v
    Can anyone please tell me how to properly wire?
     
  2. deusexaethera

    deusexaethera OT Supporter

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    Why aren't you just using normal PC fans?
     
  3. mobbarley

    mobbarley Active Member

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    standard potentiometers are around 0.5W - you probably have it wired correctly but it is burning out due to low power handling. you are essentially using resistors to control the fan an in the process adding more heat to your case. you want to either run the fans off the 5v wire and deal with that or look at a PWM circuit for varying the fan speed. buy a cheap fan controller and the work is done for you.
     
  4. trouphaz

    trouphaz New Member

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    pentometer? ac/dc fan? wtf? can't you just buy a regular fan, plug it in and have it work without having to worry about the electronics involved?
     
  5. CodeX

    CodeX Guest

    Yeah, use pulse width modulation not a pot, I am sure you can find a little IC that will do it
     
  6. deusexaethera

    deusexaethera OT Supporter

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    That shit causes back-EMI that can damage motherboard components.

    How about if he just buys a normal fucking fan instead of trying to jerry-rig something to do what it wasn't intended to do?
     
  7. CodeX

    CodeX Guest

    Even if its completely separate?

    Yes, that would be ideal but I am answering the question as asked lol
     
  8. deusexaethera

    deusexaethera OT Supporter

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    Oh...no, I suppose if the fan isn't plugged into the motherboard, it's not likely to cause problems.
     

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