DC positive, negative question

Discussion in 'General Electronics Chat' started by jludwig83, Aug 24, 2013.

  1. jludwig83

    Thread Starter Member

    Jul 22, 2013
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    hello,
    I would like to know without trying this if having the positive line from one power source connect with the negative from another power source will that cause a direct short even though the other half of the connection is not completed
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Not necessarily, in the general sense you can common up either plus or minus rail to either of another, as long as the other respective rails do not come in contact.
    Max.
     
  3. jludwig83

    Thread Starter Member

    Jul 22, 2013
    33
    0
    ok thanks for the quick answer..... I am going to power this up and see what happens really wish I could explain what I am doing this is really neat
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Yes, a picture always helps!
    Max.
     
  5. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    Think: 2 batteries. Connect a negative to a positive and you get twice the voltage available. That circuit can be used as if the connection was "ground" and you have a negative supply and a positive supply, or, you can think of the most negative point as one important point, and the most positive end as the other. You have 2 open ends and a center to use as you wish, but no current will flow until you connect something more than one point.
     
  6. jludwig83

    Thread Starter Member

    Jul 22, 2013
    33
    0
    IT WORKS!!!! ok I have successfully rebuilt a world clock with 15 slave clocks this set up is a engineering master piece..... if I say so myself ...........I will post a video later I want to thank everyone who helped me complete this project
     
    Last edited: Aug 24, 2013
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