Cathode ray tube

Details Cathode ray tube Cathode ray tube

1984-02-13

1985-09-17

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural concentrating, accelerating, and/or de-accelerating...

313449, H01J 2946, H01J 2956

Patent

active

045423202

ABSTRACT:
Distance between the second grid (G2) and the third grid (G3) is selected very short and electron beam passing apertures of the second grid (G2) and the third grid (G3) are selected small; the cathode ray tube has small beam spot both at small current and large current operations.

REFERENCES:
patent: 2825837 (1953-03-01), Dudley
patent: 2935636 (1960-05-01), Knechtli
patent: 3417199 (1968-12-01), Yoshida et al.

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