Electric power source assembly for focusing electrode of color c

Details Electric power source assembly for focusing electrode of color c Electric power source assembly for focusing electrode of color c

1995-08-24

1998-06-23

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315 14, 313414, G09G 104, H01J 2946

Patent

active

057709297

ABSTRACT:
An electric power source assembly supplies the focusing electrodes of a color cathode ray tube. Such a color cathode ray tube normally includes three electron guns arranged in a line transverse to their beam path. The focusing voltages supplied the focusing electrodes associated with the three guns are independently adjusted to compensate for beam distortion caused by positional differences in gun location. The D.C. and A.C. voltage to the static and or dynamic electrodes is independently controlled to improve beam focus of each individual gun.

REFERENCES:
patent: 3766429 (1973-10-01), Vincent et al.
patent: 4886999 (1989-12-01), Yamane et al.
patent: 4935663 (1990-06-01), Shimoma et al.
patent: 5532547 (1996-07-01), Park et al.

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