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Flyback transformer EMC

Flyback transformer is a source of high frequency electromagnetic field.

Problem type:
Axisymmetric problem of Transient magnetics

Geometry:

flyback transformer

Given:
Ferrite permeability μ=1000,
Operation frequency f=1 kHz,
The transformer works in discontinuous mode, currents in windings are known.

flyback transformer current

Task:
Calculate the magnetic field distribution around flyback transformer during operation cycle.

Solution:
Model may be defined and solved as a Transient Magnetic Analysis problem.

Results:
Magnetic field around the flyback transformer.

flyback transformer emc

Magnetic flux density 1 cm away from the flyback transformer.

flyback transformer emc

Download Download simulation files flyback_transformer_emc.zip.

View movie Video.

References:
http://en.wikipedia.org/wiki/Flyback_transformer

Watch online on YouTube.