Patent ID: 7403089
Filing Date: 2008-07-22
Classification: H01F,H01J

Abstract:
1. A magnetic assembly comprising: an electromagnet which includes windings wound about a generally planar body, the generally planar body including opposite first and second side surfaces and opposite first and second principal planar surfaces extending between the opposite first and second side surfaces, wherein the windings cross over the opposite first and second principal surfaces and the opposite first and second side surfaces of the planar body; and a pair of auxiliary coils spaced from the electromagnet and lying in a same plane as the planar body of the electromagnet, wherein the pair of auxiliary coils are respectively disposed adjacent to and along the opposite side surfaces of the planar body of the electromagnet such that the planar body of the electromagnet is located between the pair of auxiliary coils, wherein a portion of each of the pair of auxiliary coils projects beyond the first principal planar surface of the electromagnet.