Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1987-08-10
1989-10-10
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 98, 363124, 363132, 363 26, 323266, 315DIG7, H02M 3335
Patent
active
048736171
ABSTRACT:
A power supply for an arc lamp. It includes a DC converter which has an input, an output, and a circuit for increasing the voltage received at the input and for supplying the increased voltage to its output. A current sensing circuit is provided for controlling the amount of current delivered to the output. An output "H" bridge is coupled to the output of the DC converter for generating a squarewave in response thereto. The power supply is capable of quickly igniting and re-igniting arc lamps, is relatively inexpensive to manufacture and it relatively light in weight. The power supply can accept either an AC or DC source over a wide voltage range and increases or decreases the input voltage compared to the output voltage.
REFERENCES:
patent: 4471269 (1984-09-01), Ganser et al.
patent: 4481460 (1984-11-01), Kroning et al.
patent: 4482848 (1984-11-01), Heal et al.
patent: 4485434 (1984-11-01), Beeston et al.
patent: 4533986 (1985-08-01), Jones
patent: 4562527 (1985-12-01), Klamt
patent: 4709188 (1987-11-01), Roberts
Jon D. Paul, "The Electronic Ballast", PCI '81 Proceedings, pp. 467-484.
Jon D. Paul, "Reliability Aspects of Electronic Ballasts", Paul Laboratories, San Francisco, Ca., pp. 1-11.
Baldwain Peter
Brent Robert
Fredrick William
Camera Platforms International, Inc.
Wong Peter S.
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