Coil

QuickField simulation example

DC voltage is applied to the coil. Calculate the switching current.

Problem Type
Axisymmetric problem of transient magnetics.

Geometry

Given
Conductor diameter 1 mm, copper electric conductivity 56 MS/m;
Relative permeability of steel 500;
Voltage U = 0.1 V.

Task
Calculate the current vs. time.

Solution
Since we do not know the time constant of the coil, we choose automatic time step option in problem properties.

Result
Coil switching current vs. time plot:

• Video: Coil
  
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