Deflection yoke with coils for reducing unwanted magnetic field

Details Deflection yoke with coils for reducing unwanted magnetic field Deflection yoke with coils for reducing unwanted magnetic field

1996-12-06

1999-05-25

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313479, 313313, 335213, H01J 2970

Patent

active

059072148

ABSTRACT:
A cathode ray tube display device including unnecessary radiating magnetic field reducer which improves the ability to reduce an unnecessary radiating magnetic field, especially, generated by a vertical deflection coil. A pair of coil is disposed in opposing relationship on the opposite sides of the ferrite core along an X-axis or in the horizontal direction of the deflection yoke so as to be in contact with an open side end of the ferrite core. Each coil has a shape curved with a predetermined radius of curvature conforming to the shape of the outer peripheral surface of the ferrite core. The ferrite core acts as a magnetic material for the coils which reduces the unnecessary radiating magnetic fields to increase the coil inductances to thereby produce a large extremely low frequency magnetic field (ELMF) reducing effect.

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