Standard low voltage turns and frequencies are mostly used for transformer cores

      In order to reduce the eddy current loss, the iron core of the transformer is stacked with silicon steel sheets insulated from each other, so that the eddy current passes through a smaller cross-section in the narrow circuit to increase the resistance on the eddy current path; at the same time, the silicon in the silicon steel increases the resistivity of the material and also plays a role in reducing the eddy current.

  The iron core used as a transformer is generally made of cold-rolled silicon steel sheet with a thickness of 0.35mm, and it is cut into a long piece according to the size of the required iron core, and then overlapped into a "day" or "mouth" shape. Logically speaking, if the eddy current is reduced, the thinner the thickness of the silicon steel sheet, the narrower the spliced piece, the better the effect. This not only reduces eddy current losses, reduces temperature rise, but also saves the material used for silicon steel sheets.