Color cathode-ray apparatus having an improved deflection unit

Details Color cathode-ray apparatus having an improved deflection unit Color cathode-ray apparatus having an improved deflection unit

1988-09-15

1989-11-14

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315370, H01J 2956

Patent

active

048810150

ABSTRACT:
In a color cathode-ray apparatus, electron beams emitted from an electron gun assembly are deflected along horizontal and vertical axes by horizontal and vertical deflecting units. The horizontal deflecting unit includes first and second horizontal deflecting yokes which are located such that the center of the second horizontal deflecting yoke is defined between the center of the first horizontal deflecting yoke and the electron gun assembly. First and second horizontal deflection currents are supplied to the first and second horizontal deflecting yokes and are changed in different manners, in accordance with a degree to which the electron beams are to be deflected, and the first and seocnd deflection yokes generate pincushion and barrel magnetic fields, respectively.

REFERENCES:
patent: 4704564 (1987-11-01), Ito et al.

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