Patent ID: 6774756
Filing Date: 2004-08-10
Classification: H01F

Abstract:
A magnetic core having a composite structure, comprising:an outer magnetic core having a regular geometric shape, and a through hole formed in the geometric shape, the outer magnetic core including a box having a slot cavity defined therein, and a cover that covers the slot cavity, the box and the cover being comprised of at least one of ferrite, power ferrite and Ferrocart; an inner magnetic core disposed within the slot cavity, the inner magnetic core being comprised of at least one of ferrite, power ferrite, Ferrocart, permalloy, non-crystal magnetic material, micro-crystal magnetic material and silicon; and at least one inter-layer disposed in the slot cavity, and which divides the slot cavity into a plurality of connected ring slots, wherein the inner magnetic core includes a plurality of inner magnetic cores, each being disposed in a respective ring slot, and wherein the each inner magnetic core is comprised of a different material or same sort of material.