Deflection yoke with improved deflection sensitivity
AssigneesSony Corporation, Sony Electronics Inc.
InventorBasab Bijay Dasgupta
Life of this patent
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Abstract
A deflection yoke is described for use in a cathode ray tube, which has an improved deflection sensitivity. The deflection yoke includes a ferrite core, a vertical coil to generate a vertically defecting magnetic field and a horizontal coil to generated a horizontally deflecting magnetic field. The core has a funnel-shaped body with an opening therethrough defining an inner surface. The horizontal coil includes a pair of saddle-type coils positioned in the core such that at least a portion of the horizontal coil is in contact with the inner surface of the core.
Claims25
A deflection yoke for use in a cathode ray tube, comprising:
- a ferrite core having a funnel-shaped body with an opening therethrough defining an inner surface;
- a vertical deflection coil to generate a vertically deflecting magnetic field;
- and
- a horizontal deflection coil to generate a horizontally deflecting magnetic field, said horizontal deflection coil including a pair of saddle-type coils positioned in said core such that at least a portion of said horizontal deflection coil is in contact with said inner surface of said core.
A deflection yoke comprising:
- a core having a large diameter end, a small diameter end and an opening extending between said large and small diameter ends to define an inner surface, said core having a first channel and a second channel extending along the entire core length between said large and small diameter ends, said first and second channel having a recessed surface that is recessed relative to the rest of the inner surface of the opening;
- a pair of vertical deflection coils disposed against said recessed surface of said channels;
- and
- a pair of saddle-type horizontal deflection coils disposed against said inner surface of said core that is elevated relative to said recessed surface, wherein at least a portion of said horizontal deflection coils touches said inner surface of said core.
A core for use in a deflection yoke, comprising:
- a funnel-shaped body to reflect magnetic field produced by vertical and horizontal coils, said funnel-shaped body having a large diameter end, a small diameter end and an opening extending between said large and small diameter ends, defining an inner portion;
- a first channel and a second channel formed in said inner portion of said body extending along the entire core length, each channel defining a recessed region shaped to receive a vertical coil, wherein the depth of said recessed region is selected to accommodate the thickness of the vertical coil in addition to the thickness of a liner electrically separating the vertical coil from the horizontal coil within said recessed region.
Dependencies are inferred from the claim text.