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Transformer design



Hi !


My question is about transformer made on EI type core.

What do You think about method shown below. 

     ________________________________
    |                                |
    |     ________      ________     |                       
    |    |        |    |        |    |
  ----------    ----------    ----------
  |        |    |        |    |        |
  |        |    |        |    |        |
  | Sec.   |    |  Pri.  |    | Sec.   |
  |        |    |        |    |        |
  |        |    |        |    |        |
  ----------    ----------    ----------
    |    |        |    |        |    |
    |    ----------    ----------    |
    |                                |
    ----------------------------------

Secondaries are wound in opposite direction and serially connected.
Is it a good design to use in 1800W device that will power TC?
What about losses?


Thanks for all answers.

Kamil Kompa