Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1984-10-01
1985-12-03
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335213, 313331, 313440, H01F 710
Patent
active
045568570
ABSTRACT:
A magnetic deflection yoke is designed for use with a three gun 100.degree. in-line cathode ray tube (5) having a gun base no longer than 5.9 mm and achieves self-convergence and four-sided pincushion correction by means of the cathode ray tube and yoke only. The yoke includes a set of segmented saddle-type horizontal deflection coils (8) and a set of toroidal-type vertical deflection coils (4) which are wound on a permeable core (3) surrounding the horizontal deflection coils. An insulating coilform (1) between the horizontal and vertical deflection coils supports the coils and facilitates their mounting to the neck portion of the cathode ray tube envelope. Magnetic field collectors (6) essentially surround the vertical deflection coils and directs the magnetic lines of flux through the cathode ray tube envelope to produce a linear vertical deflection of the cathode ray beam. Magnetic field shunts (7) are located between the vertical deflection coil and the insulating coilform and modify the magnetic lines of flux through the cathode ray tube envelope to produce a linear horizontal deflection of the cathode ray beam. The vertical deflection coils are wound so as to achieve a positive third harmonic coefficient and the horizontal deflection coil winding distribution is tailored to achieve, in combination with the magnetic field collectors and the magnetic field shunts, self-convergence and four-sided pincushion correction.
REFERENCES:
patent: 2925542 (1960-02-01), Gethmann
patent: 3430099 (1969-02-01), Ashley
patent: 3735193 (1922-05-01), Ikeuchi
patent: 4117434 (1978-09-01), Logan
patent: 4143346 (1979-03-01), Borkar
patent: 4217566 (1980-08-01), Hamano
patent: 4233582 (1980-11-01), Abe
patent: 4246560 (1981-01-01), Shimizu et al.
patent: 4257023 (1981-03-01), Kamijo
patent: 4305055 (1981-12-01), Marett
patent: 4401917 (1983-08-01), Gerritsen
patent: 4409578 (1983-10-01), Beelaard et al.
patent: 4415831 (1983-11-01), Konosu
patent: 4420734 (1983-12-01), Shimizu et al.
patent: 4431940 (1984-02-01), Habraken et al.
patent: 4433268 (1984-02-01), Arisato
patent: 4433318 (1984-02-01), Okuyama et al.
Kaashoak, "A Study of Magnetic-Deflection Errors", Technical University of Eindhoven, Jul., 1968, N.V. Phillips Research Reports.
Maruyama et al., "Pincushion Distortion-Free Self-Convergence Deflection System", Hitachi, Ltd., Tokyo Japan.
"Deflection Yoke for Dynamic Raster Distortion Correction Free Color Picture Tube", Toshiba New Product Information.
General Electric Company
Harris George
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