Electron gun for cathode ray tube

Details Electron gun for cathode ray tube Electron gun for cathode ray tube

1988-11-28

1990-04-03

Tarcza, Thomas H.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313449, 315 14, H01J 2958, H01J 2946

Patent

active

049147242

ABSTRACT:
Disclosed is an electron gun for cathode ray tubes successively comprising an electron source electrode or cathode, a control or Wehnelt electrode, a first acceleration electrode or anode carried to an adjustable voltage and at least one focusing or second acceleration electrode in which there is inserted, between the first acceleration electrode and the focusing or second acceleration electrode, an additional electrode which is carried, during operation, to a fixed biase voltage, this electrode forming a low-powered electrostatic lens with the anode electrode and forming a high-powered electrostatic lens with the second acceleration electrode.

REFERENCES:
patent: 4009410 (1977-02-01), Pommier et al.
Patent Abstracts of Japan, vol. 4, No. 152, (E-31)[634], Oct. 24, 1980.
IEEE Transactions on Broadcast and Television Receivers, vol. 21, No. 1, Feb. 1975, pp. 57-62, New York, U.S.

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