Sense Coil Transient

The transient response of a sense coil was investigated using a 2d axis-symmetric finite element model. Because of the speed of the transient, both proximity and skin effects played a significant part in determining the coil performance. Both these effects could be taken into account by modelling the individual conductors wound on a ferrite core.

 

 

ferrite cored sense coil

 

 

detail of current density (A/m**2) in coil turns, showing significant proximity effects

 

 

contours of emf (V) in the coil turns, with magnetic flux lines