Color cathode ray tube with eddy current reducing electron gun

Details Color cathode ray tube with eddy current reducing electron gun Color cathode ray tube with eddy current reducing electron gun

1996-08-16

1997-12-30

Patel, Nimeshkumar

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 313414, 313413, H01J 2951

Patent

active

057034303

ABSTRACT:
The centering cup of an in-line electron gun of a color cathode ray tube is provided with four slits, positioned substantially mirror-symmetrical with respect to the in-line plane and with respect to a plane perpendicular to the in-line plane through the central aperture, a line drawn through two slits and the central opening making an angle with the in-line plane ranging between 51 and 63 degrees. The slits reduce the occurrence of eddy currents, without introducing convergence errors.

REFERENCES:
patent: 4593226 (1986-06-01), Naiki
patent: 4625145 (1986-11-01), Gerritsen et al.
patent: 4659961 (1987-04-01), Naiki

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