Patent ID: 6380834
Filing Date: 2002-04-30
Classification: H01F

Abstract:
An electro-magnetic assembly comprising:a core constructed of magnetizable material and having first and second portions, said first portion having a base and at least one projection extending transverse to said base, said second portion being formed to mate with said first portion to form a closed magnetic circuit; a winding constructed having a stack of at least one layer, each of said at least one layer further comprising: a planar element constructed of electrical insulating material having an opening constructed therein, said planar element having a groove constructed therein forming a loop surrounding said opening, said groove being filled with a conductive material to form a conductive path; and wherein said winding is assembled on said first core portion with said projection extending into said opening of said winding to establish magnetic coupling between the winding and core, said second core portion being engaged with said first core portion to provide a closed magnetic circuit through said opening and around said winding.