Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1999-10-22
2000-12-05
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
348730, H02M 3335
Patent
active
061575496
ABSTRACT:
A video apparatus includes a data acquisition mode (DAM) module. The DAM module contains memory to store a television program guide information. A standby supply voltage, derived from a first winding of a transformer, is coupled for energizing the DAM module, only during scheduled times, set up by the user. A supply voltage B+ generated from a second winding of the transformer energizes the deflection circuits, during the run mode. Voltage B+ is coupled in a negative feedback path to a voltage regulator. When the DAM module is energized, the deflection circuits are turned off. The energized DAM module causes a significant increase in the current consumption from the first winding of the transformer. A switch is coupled in the feedback path of voltage B+. The switch causes an attenuation of a portion of voltage B+ that is fed back to the regulator, in the DAM operation. Thereby, a tendency of the standby supply voltage to decrease, during the DAM operation, is compensated.
REFERENCES:
patent: 3956669 (1976-05-01), Del Ciello
patent: 4516168 (1985-05-01), Hicks
patent: 4516169 (1985-05-01), Truskalo
patent: 4588929 (1986-05-01), Wedam et al.
patent: 4633146 (1986-12-01), Babcock
patent: 4734771 (1988-03-01), Lendaro et al.
patent: 4740879 (1988-04-01), Peruth
patent: 4761723 (1988-08-01), Lendaro
patent: 4766528 (1988-08-01), Marinus
patent: 4788591 (1988-11-01), Decraemer
patent: 4930060 (1990-05-01), Muterspaugh
patent: 4937728 (1990-06-01), Leonardi
patent: 4975592 (1990-12-01), Hahn et al.
patent: 4994719 (1991-02-01), Lendaro
patent: 5126930 (1992-06-01), Ann
patent: 5291386 (1994-03-01), Wu
patent: 5353215 (1994-10-01), Dinwiddie et al.
patent: 5453921 (1995-09-01), Shutts
patent: 5578916 (1996-11-01), Muterspaugh
patent: 5689407 (1997-11-01), Marinus et al.
patent: 5812383 (1998-09-01), Majid et al.
patent: 5831837 (1998-11-01), Coyne et al.
patent: 5852550 (1998-12-01), Majid et al.
patent: 5920466 (1999-07-01), Hirahara
patent: 5949154 (1999-09-01), Williams
patent: 5956240 (1999-09-01), Williams
patent: 5959851 (1999-09-01), Shutts
patent: 5999421 (1999-12-01), Liu
Henig Sammy S.
Laks Joseph J.
Laxton Gary L.
Thomson Licensing S.A.
Tripoli Joseph S.
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