Eccentric convergence apparatus for in-line beam cathode ray tub

Details Eccentric convergence apparatus for in-line beam cathode ray tub Eccentric convergence apparatus for in-line beam cathode ray tub

1976-06-21

1978-07-11

Pellinen, A. D.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

H01J 2968

Patent

active

041005180

ABSTRACT:
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 effects 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.

REFERENCES:
patent: RE27698 (1973-07-01), Werst
patent: 3290532 (1966-12-01), Lemke et al.
patent: 3508181 (1970-04-01), Melone
patent: 3743984 (1973-07-01), Takenaka et al.
patent: 3743985 (1973-07-01), Nishimura et al.
patent: 3793602 (1974-02-01), Lister
patent: 3889217 (1975-06-01), Martin et al.
patent: 4045754 (1977-08-01), Barten

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