Deflection yoke and cathode ray tube having the same

Details Deflection yoke and cathode ray tube having the same Deflection yoke and cathode ray tube having the same

1995-01-09

1996-03-12

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

31536819, H01J 2956

Patent

active

054989396

ABSTRACT:
A deflection yoke attached to a color cathode ray tube forming multiple electron beams arranged in line, and in particular a deflection yoke having convergence correction apparatus. Circuit components such as a plurality of resistors, variable resistors, and diodes are connected in parallel with vertical deflection coils. A part of a vertical deflection current flowing through the vertical deflection coils is diverted to the circuit components. Furthermore, the amount of the diverted current is made adjustable so that it will differ between a former part of a vertical deflection period and a latter part thereof. As a result, horizontal line misconvergence at upper and lower ends of the screen can be completely corrected.

REFERENCES:
patent: 3906303 (1995-05-01), Gerritsen
"Low Leakage Magnetic Field SS Deflection Yoke for 14" Color Display CRT," Technical Report of the Institute of Television Engineers of Japan, vol. 16, No. 2, Jan. 1992, IDY92-18, pp. 31-35.

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