Deflection yoke apparatus

Details Deflection yoke apparatus Deflection yoke apparatus

1983-06-01

1985-10-15

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

H01J 2970, H01J 2976

Patent

active

045477078

ABSTRACT:
The deflection yoke apparatus comprises the deflection yoke and the correction coil device which is fitted to the deflection yoke. The deflection yoke is provided with a pair of horizontal deflection coils and a pair of vertical deflection coils which are electrically separated from one another by the coil separator, and the deflection core made of magnetic material and is constructed so that the deflection magnetic field is generated in which the misconvergence of rasters appearing on the screen when three electron beams in the in-line arrangement are deflected is of only the horizontal component. The correction coil device comprises a pair of magnetic cores and correction coils wound around the pair of magnetic cores and shifts the both-side electron beams in the horizontal direction when the paraboloidal wave current is supplied to dynamically converge the electron beams in the full range of the screen. The convergence is adjusted by the variable resistor which is attached to the deflection yoke to adjust the correction current.

REFERENCES:
patent: 3287605 (1966-11-01), McGlashan
patent: 3821591 (1974-06-01), Lister
patent: 3912970 (1975-10-01), Chandler et al.
patent: 4028586 (1977-06-01), Mengle
patent: 4090110 (1978-05-01), Ogawa et al.
patent: 4097784 (1978-06-01), Fischman et al.

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