Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1983-07-27
1984-05-29
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335210, H01F 312
Patent
active
044518072
ABSTRACT:
A television receiver deflection yoke mounted on a kinescope incorporates toroidally wound vertical deflection coils which generate stray fields that undesirably interact with components of adjacent receivers or video monitors. The deflection yoke incorporates magnetically permeable field forming members which utilize the stray field flux to form an electromagnetic field at the front of the yoke to aid in side pincushion distortion correction. The field forming members comprise a flux gathering portion which is located within the region of the stray field and follows the contour of the yoke core. The flux gathering portions extend along substantially the entire length of the vertical coils and are curved to encompass a significant portion of the external surface of the core in order to reduce the undesirable effects of the stray field and to form a strong pincushion distortion correcting field.
REFERENCES:
patent: 4237437 (1980-12-01), Vink et al.
patent: 4257023 (1981-03-01), Kamijo
patent: 4307363 (1981-12-01), McGlashan
patent: 4357586 (1982-11-01), Barkow et al.
Archer John R.
McGlashan Kenneth W.
Harris George
Laks Joseph
Rasmussen Paul J.
RCA Corporation
Stevens Scott J.
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