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-15V from a +15 supply

Discussion in 'Electronic Basics' started by Dan T, Feb 26, 2004.

  1. Dan T

    Dan T Guest

    Hi all, i've got a tripple PSU that gives out +5V, +15V,+15V

    I really need one of these outputs to be -15V, is there anyway i can get
    this from the supply??? Do i just wire the + to GND, and the -Ve end will
    become -15V???

    Thanks for help,
    Dan
     
  2. John Fields

    John Fields Guest

     
  3. Dan T

    Dan T Guest

    eeerr..when i tested it earlier it did seem that the -15V was just floating
     
  4. Dan T

    Dan T Guest

    its got +15V OP, -15V OP, +5V OP, -5V OP marked up on it

    when i refrenece the -15V OP to the -5V OP they seemed to be floating for
    some reason.

    there isn't any other 0V refrence though.

    when i get into work tomorrow i'll make a note of the model number. All i
    know at the moment is its a schroff tripple PSU that i don't think is
    manufactured any more.
     
  5. John Fields

    John Fields Guest

    ---
    Yeah, then, AFAIK no problem!

    If you've got a lead which says +15 on it and another which says -15 on
    it and you've got 15V between them and neither one of them is connected
    to 0V, GND, common, or anything else, then connect +15V to whatever your
    0V reference is and the other end will be 15V below that.
     
  6. Dan T

    Dan T Guest

    Thanks for your help John, much appreciated. - sorry for emailing ur home
    address, clicked on wrong reply button.

    Dan
     
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