Convergence correcting device for in-line type color picture tub

Details Convergence correcting device for in-line type color picture tub Convergence correcting device for in-line type color picture tub

1990-07-06

1991-12-24

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313428, 313431, 313440, H01J 2976, H01J 2956

Patent

active

050755900

ABSTRACT:
A convergence correcting device for an in-line type color picture tube is disclosed. The characteristic portion of the invention includes a pair of magnets and a bobbin. The bobbin includes a vertical deflection auxiliary magnetic field generating section, horizontal deflection auxiliary magnetic field generating sections, and magnetic field adjusting sections. The vertical deflection auxiliary magnetic field generating section is disposed at the center of the device, and receives a core and a coil wound thereon. The horizontal deflection auxiliary magnetic field generating sections are disposed at the left and right of the vertical deflection auxiliary magnetic field generating sections, and receive cores and coils wound thereon. The magnetic field adjusting sections are disposed at the outsides of the horizontal deflection auxiliary magnetic field generating sections, and are provided with thread portions for coupling with the magnets.

REFERENCES:
patent: 4882521 (1989-11-01), Arimoto

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