Patent ID: 6798632
Filing Date: 2004-09-28
Classification: B63G,H01F

Abstract:
Degaussing apparatus for use in relation with an electrical device, said degaussing apparatus comprising at least four circuitous combinations, each said circuitous combination including a coil unit, a voltage amplifier and a power amplifier;wherein as to each said circuitous combination: said coil unit lies in a geometric plane and defines a geometric polygonal planar shape that borders upon said electrical device; said coil unit includes two conductor means; a first said conductor means is connected with the input of said voltage amplifier; a second said conductor means is connected with the output of said power amplifier; said voltage amplifier is connected with said power amplifier; said voltage amplifier produces a voltage proportional to the magnetic flux sensed as associated with said electrical device, said magnetic flux passing perpendicularly through said geometric polygonal planar shape defined by said coil unit; said power amplifier produces a current counteracting said voltage produced by said voltage amplifier so as to neutralize said magnetic flux passing perpendicularly through said geometric polygonal planar shape defined by said coil unit; wherein the respective said geometric polygonal planar shapes defined by said coil units together form a geometric polyhedral enclosure for said electrical device whereby the aggregate effect of said neutralizations of said magnetic flux is to prevent the escape of any said magnetic flux from said geometric polyhedral enclosure.