Why should the transformer use layered silicon steel sheet?
The magnetic core of a transformer has eddy current losses at work, and the direction of the eddy is perpendicular to the direction of the magnetic field
The surface of sheet silicon steel sheet has a layer of insulating coating, and the thinner the silicon steel sheet, the less eddy current loss
If the whole iron core is used, the resistance is very small in the direction of the vertical magnetic field line, the eddy current will be large and the loss will be largeTherefore, magnetic cores are usually made of materials with higher resistivity, or processed into slices in a superposition mannerThe resistance values in the direction perpendicular to the magnetic field line reduce eddy current losses.
