Convergence apparatus for color cathode-ray tube

Details Convergence apparatus for color cathode-ray tube Convergence apparatus for color cathode-ray tube

1982-09-27

1983-09-20

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335213, H01F 700

Patent

active

044059108

ABSTRACT:
In the convergence apparatus which is mounted on a color cathode-ray tube in which three electron beams are in-line arranged, an annular core is fitted to a bobbin which is provided with 12 or 24 segments which isolate the winding sectors of coils, and two groups of 6-pole coils and two groups of 4-pole coils are wound around the winding sectors isolated by the segments. The winding sectors are arranged so that two groups of 6-pole coils are provided to generate magnetic poles at the positions of approximately 30.degree. intervals and two groups of 4-pole coils to do so at the positions of approximately 45.degree. intervals. The core wound with coils is fitted to the edges of circular through holes provided in the terminal plate by using the segments and the specified lead wires of the coils are connected to the printed wires provided on the terminal plate. The terminal plate is attached to the holder mounted with a plurality of ring magnets, and the convergence apparatus is thus constructed in a compact configuration as a whole.

REFERENCES:
patent: 3569881 (1971-03-01), Torsch
patent: 4122421 (1978-10-01), Malerba
patent: 4260974 (1981-04-01), Nelle
patent: 4339736 (1982-07-01), Burr et al.

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