Dynamic focus coupling

Details Dynamic focus coupling Dynamic focus coupling

1994-12-28

1996-10-15

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

G09G 104

Patent

active

055657460

ABSTRACT:
A dynamic focus voltage generating circuit comprises a source of DC voltage coupled to a focus electrode of a cathode ray tube. A source of varying voltage is coupled to the focus electrode through a capacitance formed by a pair of coaxial conductors. The outer conductor of said coaxial pair is coupled to said source of varying voltage, and the inner conductor of said coaxial pair is coupled to said source of DC voltage.

REFERENCES:
patent: 4081770 (1978-03-01), Mayer
patent: 4281360 (1981-07-01), Brehse
patent: 4704630 (1987-11-01), Rodda
patent: 5040091 (1991-08-01), Yamaoka et al.

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