Focusing unit

Details Focusing unit Focusing unit

1990-11-28

1992-04-14

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

338 97, 338160, 200 11DA, G09G 104, H01C 1006, H01C 1030, H01C 1958

Patent

active

051051281

ABSTRACT:
A unit for adjusting the focusing voltage of a cathode ray tube by controlling the high voltage of a flyback transformer comprising a main body unit (400) consisting of an interior face having a rail (402) extending therefrom, a knob (3) journaled in the main body, a variable shaft means (417) connected to turn with the knob, a contact terminal support (412) having a cylindrical protrusion (414) extending through an elongate opening in the variable shaft means, the protrusion having a rail groove (413) therein for sliding over the rail and a contact pin (411) carried by the contact terminal support.

REFERENCES:
patent: 3909769 (1975-09-01), Rozema et al.
patent: 4200780 (1980-04-01), Romano
patent: 4492950 (1985-01-01), Simovits, Jr.
patent: 4527147 (1985-08-01), Arakawa
patent: 4631512 (1986-12-01), Hishiki et al.
patent: 4679024 (1987-07-01), Kittleson

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