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Wye-Delta transformation

  1. Jan 13, 2015 #1
    To prove the wye-delta transformation formula, it is said 'If the two circuits are to be equivalent,
    the total resistance between any two terminals must be the same.' But why ? I can't convince myself that it is sufficient condition for the equivalence of circuits.
     
  2. jcsd
  3. Jan 13, 2015 #2
    In order to input/output currents for given voltage be the same. What else did you expect to mean by the equivalence of the circuits?
     
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