High voltage stabilization circuit for video display apparatus

Details High voltage stabilization circuit for video display apparatus High voltage stabilization circuit for video display apparatus

1990-04-30

1991-04-23

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, H01J 2970, H04N 563

Patent

active

050102818

ABSTRACT:
A horizontal deflection circuit output stage generates a retrace pulse in a tertiary winding of a flyback transformer. A flyback pulse that is substantially wider than the retrace pulse is produced in a winding of a second transformer that is coupled in series with the tertiary winding such that the retrace pulse occurs when a peak portion of the flyback pulse is already relatively "flat". The amplitude of the flyback pulse is controlled in a negative feedback loop for stabilizing an ultor voltage.

REFERENCES:
patent: 4728868 (1988-03-01), Ishikawa et al.
patent: 4812720 (1989-03-01), Haferl
U.S. patent application No. 398,515, in the names of Rodriguez-Cavazos et al., entitled High Voltage Regulator Circuit for Picture Tubes.

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