Brightness controlled CRT

Details Brightness controlled CRT Brightness controlled CRT

1978-03-29

1979-04-10

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Automatic cut-out or voltage regulator in the cathode or...

315 10, 315158, 315291, 315307, 358219, H01J 2998

Patent

active

041491106

ABSTRACT:
A cathode ray tube control system comprising a cathode ray type tube having a tubular envelope wherein an electron gun is disposed to direct an electron beam onto a spaced anode target screen, the gun including an electron emitting source aligned with an adjustably biased grid means for controlling the current level of the electron beam, and external circuit means connected to the grid means and to the source for adjusting the current level of the electron beam and the electron emission capability of the source correspondingly.

REFERENCES:
patent: 3885194 (1975-05-01), Schumacher
patent: 3909662 (1975-09-01), Thomas et al.
patent: 3909663 (1975-09-01), Thomas et al.

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