Wye-Delta transformation

  • #1
236
16

Main Question or Discussion Point

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.
 

Answers and Replies

  • #2
1,176
213
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.
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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