Coupled Coils

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This Demonstration plots the voltage transfer function of two equivalent electrical circuits coupled by magnetic interactions between their inductors. This shows how the coupling affects the magnitude and the phase angle of the voltage transfer function. Both the magnitude and phase of the input voltage are held constant.


In addition to changing the magnetic field coupling, you can also change the circuit component values (, , of both circuits are equal) to see their effect on the voltage transfer function.


Contributed by: David Hippe (March 2011)
Open content licensed under CC BY-NC-SA



A. Budak, Circuit Theory Fundamentals and Applications, Englewood Cliffs, NJ: Prentice-Hall, 1978.

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