Low consumption electron gun for cathode ray tubes

Details Low consumption electron gun for cathode ray tubes Low consumption electron gun for cathode ray tubes

1986-12-15

1989-04-25

Blum, Theodore M.

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

H01J 116, H01J 1910

Patent

active

048251194

ABSTRACT:
A low consumption electron gun is provided for cathode ray tubes. The heating filament of the cathode includes a resistant wire and lugs for connection to an electric energy supply. The resistant wire is wound spirally. The active part of the heating filament is formed of at most two turns, each of which is formed by a multiplicity of elementary turns; the connecting lugs have a core made from a low electric resistance metal which short circuits the elementary turns of the resistant wire.

REFERENCES:
patent: 2359302 (1944-10-01), Curtis
patent: 3280452 (1966-10-01), Merritt
patent: 4151441 (1979-04-01), Puhak
Patents Abstracts of Japan, vol. 3, No. 92 (E-128), Aug. 4, 1979, p. 48 E 128; & JP-A-54 69 952 (Tokyo Shibaura Denki K.K.) 06-05-1979.
Patents Abstracts of Japan, vol. 1, No. 8, Mar. 16, 1977, p. 198 E 76; & JP A 51 113 451 (Tokyo Shibaura Denki K.K.) 10-06-1976.

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