Deflection yoke and yoke core used for the deflection yoke

Details Deflection yoke and yoke core used for the deflection yoke Deflection yoke and yoke core used for the deflection yoke

1998-02-13

2000-04-04

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

H01J 2970

Patent

active

060465387

ABSTRACT:
The present invention provides a deflection yoke for deflecting an electron beam emitted from an electron gun of a CRT (cathode ray tube). The deflection yoke is mounted on the CRT at a position between a neck tube having a small diameter section and a funnel having a large diameter section of the CRT. The deflection yoke comprises a horizontal deflection coil for deflecting the electron beam in a horizontal direction in the CRT, a vertical deflection coil for deflecting the electron beam in a vertical direction in the CRT, and a yoke core having a cone shape with a large diameter part at one end thereof in a side of the funnel and a small diameter part at another end thereof in a side of the neck tube to allow the yoke core to cover the horizontal and vertical deflection coils. The yoke core is made of a molded magnetic material cured by heating. The molded magnetic material includes a binder comprising a resin and a magnetic powder treated with a surface treatment agent comprising a compound having an aminoquinone group as a constitution unit.

REFERENCES:
patent: 5475066 (1995-12-01), Nikles et al.

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