Deflection yoke apparatus with means for reducing unwanted radia

Details Deflection yoke apparatus with means for reducing unwanted radia Deflection yoke apparatus with means for reducing unwanted radia

1987-09-01

1989-08-01

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

315 8, 315 85, 335213, 335214, H01F 700, H01J 2946

Patent

active

048535885

ABSTRACT:
A deflection yoke apparatus comprises pairs of horizontal and vertical deflection coils. A coil separator is located between both coils. A deflection core forms a magnetic path for a magnetic flux generated from both deflection coils. An auxiliary coil is arranged at least a one position in a vertical deflection direction outside the deflection core. A horizontal deflection current is supplied to this auxiliary coil. A magnetic field, generated from the auxiliary coil, reduces an intensity of externally leaking magnetic field which radiates outside the deflection core when a horizontal deflection current is supplied to the horizontal deflection coils.

REFERENCES:
patent: 3019361 (1962-01-01), DiPaolo
patent: 4386331 (1983-05-01), Kohzuki et al.
patent: 4433318 (1984-02-01), Okuyama et al.
patent: 4553120 (1985-11-01), Dam
patent: 4587504 (1986-05-01), Brown et al.
patent: 4636684 (1987-01-01), Yokota et al.
patent: 4788470 (1988-11-01), Kohzuki et al.

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