Cathode ray tube deflection device having heat dissipation means

Details Cathode ray tube deflection device having heat dissipation means Cathode ray tube deflection device having heat dissipation means

1987-03-16

1988-06-07

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Temperature-responsive type

335210, H01F 700

Patent

active

047499753

ABSTRACT:
A deflection device generating magnetic field for electron beam deflection comprises, a cylindrical mold, a horizontal deflection coil provided inside the mold, a magnetic core attached to outside of the mold, a vertical deflection coil wound on the core, and magnetic member means for modifying deflection field distribution, interposed between the mold and vertical deflection coil.
The deflection device further includes a porous ceramic layer for heat dissipation coated on at least a part of the outer surfaces of the mold, horizontal deflection coil, vertical deflection coil and magnetic member means.

REFERENCES:
patent: 4494097 (1985-01-01), Lenders
patent: 4673906 (1987-06-01), Petrow
Patent Abstracts of Japan, unexamined applications, E section, vol. 8, No. 70, Apr. 3, 1984, The Patent Office Japanese Government, p. 134 E 235.

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