Half-bridge inverter for asymmetrical loads

Details Half-bridge inverter for asymmetrical loads Half-bridge inverter for asymmetrical loads

2005-08-30

2005-08-30

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S224000, C315S279000

Reexamination Certificate

active

06936974

ABSTRACT:
The invention pertains to a switchmode power inverter, and particularly to a half-bridge inverter for asymmetrical load. More particularly, the invention pertains to high frequency electronic ballast for gas discharge devices, especially for high intensity discharge lamps, completed by an internal high voltage ignition circuit and transient current control protecting against the asymmetrical feature of high intensity discharge lamps at startup.

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patent: 6603674 (2003-08-01), Franck et al.
J. Melis, Ballast curves for HPS lamps operating on high frequency, IAS 1992, Technical Conference, Houston, Texas.
J. Melis, Master-slave half-bridge inverter, APEC 1993, Orlando, Florida.
M.C. Unglert, The need for high-pressure sodium ballast classification, Lighting Design and Application, Mar. 1982.

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