Browse Prior Art Database

Flat Circuit Coil

IP.com Disclosure Number: IPCOM000077255D
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

O'Donnell, RT: AUTHOR

Abstract

A magnetic material is slipped inside a spiral conductive winding formed from a continuous flat circuit. The usual turn interconnection steps are not required.

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Flat Circuit Coil

A magnetic material is slipped inside a spiral conductive winding formed from a continuous flat circuit. The usual turn interconnection steps are not required.

A single spiral is deposited on one surface of a flat flexible substrate such as MYLAR* polyester. One end of the spiral connects to a lead on one surface of the substrate, and the other end connects to a lead on the other surface through a slit. Though not shown, spirals may be deposited on both surfaces of the substrate and more than one spiral may be placed on each surface, if desired. Center taps, not shown, may be connected to leads through the slit. In any of these variations, all leads not part of a spiral should be parallel to the flux field formed when current flows.

The flat substrate is folded and slipped around the magnetic material in four steps. More than one winding can be placed on each substrate and slipped over the same material. * Trademark of E. I. du Pont de Nemours & Co.

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