Patent ID: 7227442
Filing Date: 2007-06-05
Classification: G01R,H01F

Abstract:
1. A device for sensing current in an electrical path, comprising: a printed circuit board including a first layer and a second layer, the printed circuit board defining an aperture for receiving the electrical path therethrough, a first return path defined about the aperture on the first layer of the printed circuit board, a second return path defined about the aperture on the second layer of the printed circuit board, the second return path further being connected in parallel to the first return path, a plurality of radial paths defined on the first layer of the printed circuit board, the first layer paths each extending between the aperture and the first return path, and a plurality of radial paths defined on the second layer of the printed circuit board, the second layer radial paths each extending between the aperture and the second return path, wherein each first layer radial path is connected with an adjacent second layer radial path to form a generally toroidally-shaped main coil winding.