Convergence apparatus for in-line beam cathode ray tubes

Details Convergence apparatus for in-line beam cathode ray tubes Convergence apparatus for in-line beam cathode ray tubes

H - Electricity

01

J

313/35.1201

H01J 29/70 (2006.01)

Patent

CA 1081759

CONVERGENCE APPARATUS FOR IN-LINE BEAM CATHODE RAY TUBES Abstract Of The Disclosure Apparatus for moving in any direction a first outer beam of three in-line electron beams within the envelope of a cathode ray tube. A magnetic field producing arrangement is rotationally adjustable about the neck of a cathode ray tube and has an interior zero magnetic field point located between the central and second outer beams. The arrangement produces movement of the first outer beam in any direction with substantially no movement of the two other beams. To converge both of the outer beams onto the central beam, a second magnetic field producing arrangement is provided.

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