Zoom focus and deflection assembly for electron discharge device

Details Zoom focus and deflection assembly for electron discharge device Zoom focus and deflection assembly for electron discharge device

1982-04-28

1985-07-09

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313382, 313381, H01J 2958

Patent

active

045278466

ABSTRACT:
The zoom focus and deflection assembly for an image-to-electron beam converting electron discharge device comprises a magnetic deflection yoke and a magnetic electron beam focusing coil having N sections each having its own adjustable current source such that at least the opposite end ones of the N sections have the magnitude of current therethrough changed simultaneously in the opposite direction, where N is an integer greater than one.

REFERENCES:
patent: 3295010 (1966-12-01), Clayton
patent: 3686527 (1972-08-01), Gabor

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