Quick transformer question

Discussion in 'Homework Help' started by bzzzt, May 19, 2011.

  1. bzzzt

    Thread Starter New Member

    Nov 1, 2010
    4
    0
    Hey All,

    I'm trying to make a bi polar power supply but don't have a center tapped transformer. I do, however, have a dual secondary transformer. My question is, can I essentially tie the negative of the first secondary negative to the second secondary positive and make a makeshift center tap? Like this:

    [​IMG]

    Here is the center tapped one, is it the same as this one:

    [​IMG]

    with the dual secondaries? Is there something else I need to add? And would you throw up a resistor somewhere? The IC's are going to be voltage regulators.

    Thanks a lot!!!!

    Bzzzt
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Presumably the two secondaries have the same voltage - then yes no problem.
     
  3. asullivan

    New Member

    Oct 23, 2010
    2
    0
    Yes, I concur, they are equivalent circuits...Full wave bridge all tha' way...:)
     
  4. Kingsparks

    Member

    May 17, 2011
    118
    5
    Yes, keep them in phase.
     
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