Back to the Bridge Which resistors are in series?

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Presentation transcript:

Back to the Bridge Which resistors are in series? Which resistors are in parallel? ECE 201 Circuit Theory I

Delta (Δ) Connection Resistors R1, R2, and Rm (or R3, Rm, and Rx) are in a Delta (Δ), or pi (π) connection. ECE 201 Circuit Theory I

Wye (Y) Connection Resistors R1, Rm, and R3 (or R2, Rm, and Rx) are in a wye (Y), or tee (T) connection. ECE 201 Circuit Theory I

Δ – Y Conversion ECE 201 Circuit Theory I

Δ – Y Conversion (continued) The resistance between the terminal pairs must be the same for both circuits ECE 201 Circuit Theory I

Δ – Y Conversion (continued) After some algebraic manipulation ECE 201 Circuit Theory I

Y – Δ Conversion ECE 201 Circuit Theory I

Y – Δ Conversion (continued) The resistance between the terminal pairs must be the same for both circuits ECE 201 Circuit Theory I

Y – Δ Conversion (continued) After some algebraic manipulation ECE 201 Circuit Theory I