Correcting coil of deflection yoke

Details Correcting coil of deflection yoke Correcting coil of deflection yoke

1993-10-01

1995-07-11

Brinich, Stephen

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

H01F 700

Patent

active

054324017

ABSTRACT:
There is provided a correcting coil of a deflection yoke wherein a correcting coil is brought into close and wide contact with a neck portion of a bobbin 1 of the deflection yoke by slightly altering the correcting coil which is used at present to further improve magnetic permeability and hence the amount of correction of magnetic lines of force. Correcting coil 11A of the deflection yoke includes a hollow correcting coil bobbin 13 on the outer periphery of which a coil 12 is wound and a core 14 configured into a U-shape by superimposing respective ends of two L-shaped core members made by laminating thin magnetic pieces 15 inside the correcting coil bobbin. A magnetic correcting piece 16 is provided which has a wider area and which makes contact with a neck portion 3 of the bobbin 1 of the deflection yoke 10 on the tip end of each leg part of said U-shaped core 14.

REFERENCES:
patent: 3553523 (1971-06-01), Budd
patent: 3848207 (1974-11-01), Bussey et al.
patent: 4470029 (1984-09-01), Chase
patent: 5014029 (1991-05-01), Kawaguchi
patent: 5166576 (1992-11-01), Roussel et al.

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