Circuit Phasor Diagram for Transformers

U

1

/ V

220

R

1

/ Ω

0.5

R

2

/ Ω

0.5

X

1

/ Ω

1

X

2

/ Ω

1

k

2

R

m

/ Ω

2.5

X

m

/ Ω

5

R

L

/ Ω

1

X

L

/ Ω

1

circuit

0

1

2

This Demonstration shows the equivalent circuit phasor diagram for a transformer.

A power source supplies a voltage that is some combination of sine waves, represented by a phasor diagram. For

sinx

, the phasor diagram would be a unit vector rotating about the origin. A more complex circuit gives a combination of these, representing the changes in electromagnetic quantities as circuit parameters are varied.