Patent ID: 8022804
Filing Date: 2011-09-20
Classification: H01F,Y10T

Abstract:
1. A winding assembly for a transformer or other inductive element, having: a wire winding comprising a spirally wound insulated wire; and a metal winding sheet, wherein said wire winding is bound directly to a first surface of the metal winding sheet and wherein the spirally wound insulated wire is bound to the metal winding sheet such that an aperture of said spirally wound insulated wire and an aperture of said metal winding sheet form a common aperture for insertion of a magnetic core, the aperture of the metal winding sheet is a substantially circular aperture, the aperture of the spirally wound insulated wire is defined by an innermost turn of said wire winding and the innermost turn of the wire winding substantially has a shape of a polygon, a circumscribed circle of the polygon having a larger diameter than a diameter of the substantially circular aperture, and an inscribed circle of the polygon having a smaller diameter than the diameter of the substantially circular aperture.