Magnetizing apparatus and method for producing a statically conv

Details Magnetizing apparatus and method for producing a statically conv Magnetizing apparatus and method for producing a statically conv

1977-07-26

1979-07-24

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335284, H01F 700

Patent

active

041624700

ABSTRACT:
A magnetizing apparatus for use in the static convergence of three in-line electron beams within a color television receiver cathode ray tube comprises two pluralities of windings. Each plurality is suitably arranged for positioning about a neck portion of the cathode ray tube in proximity to a magnetic material located adjacent to the neck. The windings are adapted to receive a magnetizing current for creating permanently magnetized regions within the magnetic material for producing a magnetic field within the cathode ray tube. The first plurality provides for like motion of the outer electron beams for which a first multiplicity of windings provides for like motion in a first direction and a second multiplicity provides for like motion in a direction substantially orthogonal to the first direction. The second plurality of windings produces a magnetic field for providing opposite motion of the outer electron beams for which a third multiplicity of the second plurality provides for opposite motion in a second direction and a fourth multiplicity provides for opposite motion in a direction substantially orthogonal to the second direction.

REFERENCES:
patent: 3098942 (1963-07-01), Reiches
patent: 3497745 (1970-02-01), Boeing
patent: 4027219 (1977-05-01), Van Alphen et al.
patent: 4105983 (1978-08-01), Barten

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