Ferrite core with concave and convex portions
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United States of America Patent
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Jul 28, 1998
Grant Date -
N/A
app pub date -
Oct 28, 1996
filing date -
Oct 26, 1995
priority date (Note) -
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Abstract
A ferrite core for a deflection yoke of a CRT includes concave and convex portions for correcting a raster distortion of the deflection yoke by varying a magnetic path at one end of a screen portion of the ferrite core. The ferrite core may be incorporated in a deflection yoke that includes a horizontal deflection coil for deflecting electron beams emitted from an electron gun in the horizontal direction, a vertical deflection coil for deflecting the electron beams in the vertical direction, and a holder for fixing the horizontal deflection coil and the vertical deflection coil to given positions and separating them from each other. The ferrite core also prevents a magnetic force caused by the horizontal and vertical deflection coils from being reduced.
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