Deflection yoke

Details Deflection yoke Deflection yoke

1990-08-09

1991-12-03

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313412, H01J 2970, H01J 2976

Patent

active

050702807

ABSTRACT:
A ring magnetic sub-core having a plurality of protrusions inside is disposed adjacent to an electron gun side of a main magnetic core on which a horizontal deflection coil and a vertical deflection coil are wound, and an auxiliary vertical deflection coil connected with said vertical deflection coil is wound around said magnetic sub-core, thereby making it possible to have both improvement of convergence performance and reduction of barrel distortion be consistent with each other. Further, a convergence coil is wound around said magnetic sub-core so as to correct a transverse raster or a longitudinal raster.

REFERENCES:
patent: 4027219 (1977-05-01), Van Alphen et al.
patent: 4227122 (1980-10-01), Fujisawa et al.
patent: 4642527 (1987-02-01), Takahashi et al.
patent: 4961021 (1990-10-01), Oguro et al.

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