Vertical coil for a deflection yoke

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type

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335210, H01H 100, H01H 500

Patent

active

RE0313998

ABSTRACT:
A vertical coil for a deflection yoke designed for use with a tri-gun in-line cathode ray tube includes a core comprising a semi-circular split core part and a winding formed of continuous wire turns on the core part. The winding comprises first and second sections and one or more crossover turns connecting the sections. The sections are circumferentially spaced from each other along the core part with the crossover turns extending therebetween on the outer surface of the core. The sections define an area on the inner surface of the core extending from the interior to the exterior edge thereof which is substantially devoid of crossover turns. This configuration serves to generate a magnetic field which converges the beams along the vertical center axis of the tube screen without additional circuitry, auxiliary windings or other means to achieve this result.

REFERENCES:
patent: 3310763 (1967-03-01), Thompson
patent: 3375389 (1968-03-01), Hughes
patent: 3733507 (1973-05-01), Cassett et al.
patent: 3757262 (1973-09-01), Over et al.
patent: 3846659 (1974-11-01), Cassett et al.

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