Equivalent circuit of a transformer.

Discussion in 'Homework Help' started by Halim.Akiki, Jan 24, 2015.

  1. Halim.Akiki

    Thread Starter Member

    Dec 29, 2014
    44
    1
    Hi. I am having trouble referring the equivalent circuit of a transformer. Can anyone give me some explanation? Thank you.
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    How complicated a model do you need?
     
  3. HMD

    New Member

    Jan 24, 2015
    14
    2
    Hi .
    Here's an article about transformers in wikipedia .
    for more explanation , you can refer to "Electric machinery fundamentals"/chapter 2 (transformer) .
     
    Halim.Akiki likes this.
  4. Halim.Akiki

    Thread Starter Member

    Dec 29, 2014
    44
    1
    The question is that i get confused by the combinations:
    how many cases will I face for finding the equivalent circuit of a transformer? 4?

    -Step down referring to the primary
    -Step down referring to the secondary
    -Step up referring to the primary
    -Step up referring to the secondary

    Or 2 combinations of the above are the same?
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    I have always thought about a transformer being either isolation (1:1) , step-up, step-down, or both at the same time, with respect to the primary. For example, an audio output transformer is likely a step down, a tube power-supply plate transformer is a step up or could be both if it also has a filament winding, etc.
     
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