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Homework Help: Ideal trasformers

  1. Nov 8, 2005 #1
    I am having some difficulty detertming the directions current should flow in an ideal transformer given a certain dot convention. My general understanding in the past was that you simply used conservation of power: V1I1=V2I2, thus if the sign of V2 is opposite of V1, then the sign of I2 must be opposite of I1. However, when attempting to analyaze a forward converter, I end up getting the current directions backwards.

    Is there any simple pattern to follow when deriving current directions through an ideal transformer?
     
  2. jcsd
  3. Nov 10, 2005 #2

    Astronuc

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    A tutorial on the "dot convention" used in transformers.

    http://www.allaboutcircuits.com/vol_2/chpt_9/4.html

    The current direction in a wire conductor (rather than transformer magnetic conductor) is affected by the 'winding direction' with respect to the magnetic flux.
     
    Last edited: Nov 10, 2005
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