Method and apparatus for controlling brightness and alignment of

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits

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Details

315 30, 315307, 315389, H01J 2952, H01J 2954

Patent

active

040004406

ABSTRACT:
A beam of charged particles has its alignment and brightness alternately controlled in accordance with the current of the beam. The measurements of the current and any corrections for alignment or brightness are made when the beam is not applied to a target.

REFERENCES:
patent: 3619717 (1971-11-01), Lee
patent: 3644700 (1972-02-01), Kruppa

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