Cathode ray tube deflection yoke arrangement

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

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335210, 313426, H01F 500

Patent

active

050775332

ABSTRACT:
A deflection yoke for a cathode ray tube, including a first yoke portion and a second yoke portion engaged with opposite sides of the cathode ray tube neck. Each yoke portion includes a main winding for producing substantial first and associated higher harmonic magnetic fields in the neck and a correction winding for producing substantial third and higher harmonic fields. The correction winding is formed by running normally screen end transverse main winding turns longitudinally with the neck toward the cathode ray tube gun end in one yoke portion quadrant and returning them to the screen end transverse main winding in the other yoke portion quadrant.

REFERENCES:
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patent: 4390815 (1983-06-01), Key et al.
patent: 4654615 (1987-03-01), McGlashan
patent: 4654616 (1987-03-01), Dodds et al.
patent: 4823100 (1989-04-01), Bruey
Article entitled, "Design of a NS-Pin Corrected 110.degree. COTY Yoke for CRTs with Very Flat Faceplates", by B. Dasgupta, G.E. Consumer Electronics, Indianapolis, In., SID 1987 Digest.
Article entitled, "Relationship Between Raster Distortions, Screen Geometry and Winding Distribution of Deflection Yoke in a CRT Display System", by B. Dasgupta, RCA Consumer Electronics Division, Indianapolis, In., proceedings of the SID Vol. 26 1, 1985.
Article entitled, "Recent Advances in Electron Beam Deflection", by Edward F. Ritz, Jr., Tekronix, Inc., Beaverton, Ore., from Advances in Electronics and Electron Physics, vol. 49, 1979.
Article entitled, "Anastigmatic Yoke", by K. Schlesinger, pp. 102-107, from Electronics, dated, Oct. 1949.
Article entitled, "A Relation Between H.sub.O (z) and H.sub.2 (z) in Deflection Yokes and Its Influence on Convergence Errors", by J. Gerber, RCA Laboratories, Princeton, N.J., pp. 273-277, Proceedings of the SID, vol. 26, 4/1985.
Article entitled, "Fifth-Order Trilemma in Deflection Yoke Design", by A. Sluyterman, Philips Display Systems Development Laboratory, Eindhoven, The Netherlands, Proceedings of the SID, Vol. 28, 1/1987.

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