Patent ID: 6198368
Filing Date: 2001-03-06
Classification: H01J

Abstract:
A deflection yoke comprising:a coil separator having a rear plate and a neck part which are defined therein and a printed circuit board which is positioned on a side thereof;at least one horizontal deflecting coil disposed on a circumferential inner surface of the coil separator to produce a horizontal magnetic field and connected to the printed circuit board;at least one vertical deflecting coil disposed on a circumferential outer surface of the coil separator to produce a vertical magnetic field;a ferrite core positioned on the circumferential outer surface of the coil separator to reinforce the horizontal and vertical magnetic fields of the horizontal and vertical deflecting coils and having at least one pair of grooves of a predetermined width, which are formed on central upper and lower surfaces thereof; andfluctuation preventing means defined on the coil separator as a projecting element of predetermined elasticity, which extends into an along the grooves to elastically support inner surfaces of the pair of grooves of the ferrite core to prevent the ferrite core from fluctuating when the ferrite core is positioned on the coil separator.