Three Wire

Discussion in 'The Projects Forum' started by Lightfire, Apr 9, 2011.

  1. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    Hello,

    I had some devices which has a three wires. One is black, the other one is red, and the other one is white.

    I know black is for negative, red for positive, and white for ground. But my battery do not have any more terminal called "ground". So, where should I put my ground wire?

    It works if i only put the black and red. but just curious about the white one.......
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,672
    899
    What is the device?
    What voltage does it operate from?
    Does it operate from AC or DC?
    Can you post a picture?

    There are 3-wire DC devices that will be destroyed if you do what you are proposing to do. As one such example, brushless DC motors will usually have 3 wires.

    John
     
  3. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    It's looks like a fan from the computer's CPU.
    It operates from 12 volt.
    It operates from DC.
    and last, nope, i can't see it anymore... :)

    :D

    any comments?????????????
     
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,672
    899
    Does it look like this, except the yellow wire is white?

    [​IMG]

    John

    Edit: Here's a YouTube to explain it: http://www.youtube.com/watch?v=i36Zbx6zcN4
    If that is what you have, then black is negative, red is positive, and white is for sensing/controlling it.
     
  5. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    Ah, OK...

    Thanks
     
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