US 11,887,763 B2
Degaussing a magnetized structure
Victor M. Cubias, Fallston, MD (US)
Assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed by Victor M. Cubias, Fallston, MD (US)
Filed on Jan. 2, 2019, as Appl. No. 16/238,368.
Prior Publication US 2020/0211748 A1, Jul. 2, 2020
Int. Cl. H01F 13/00 (2006.01); H01H 47/00 (2006.01); H01F 5/00 (2006.01); H01F 27/36 (2006.01)
CPC H01F 13/006 (2013.01) [H01F 5/00 (2013.01); H01F 27/366 (2020.08)] 20 Claims
OG exemplary drawing
 
1. A system for degaussing a magnetized structure, the system comprising:
a first circuit that provides an alternating current (AC) signal that decays from an upper level to a lower level over a predetermined amount of time;
a first electrical coil coupled to the first circuit, wherein the first electrical coil circumscribes the magnetized structure, wherein the first electrical coil induces a decaying magnetic field on the magnetized structure in response to the AC signal to convert the magnetized structure into a degaussed structure; and
a second electrical coil that is positioned in an interior portion of the magnetized structure, wherein a direct current (DC) signal is provided to the second electrical coil to induce an offset magnetic field on the degaussed structure.