Fixed lamp frequency synchronization with the resonant tank...

Details Fixed lamp frequency synchronization with the resonant tank... Fixed lamp frequency synchronization with the resonant tank...

2006-02-15

2008-09-09

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S2090SC

Reexamination Certificate

active

07423388

ABSTRACT:
Control methods and apparatus are disclosed for operating a full-bridge inverter at resonant frequency mode, hybrid frequency mode, and fixed frequency mode. The operating frequency of the inverter equals to the user programmed frequency if the user programmed frequency is above the resonant tank frequency; and the operating frequency is synchronized with the resonant tank frequency if the user programmed frequency is below the resonant tank frequency.

REFERENCES:
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patent: 6633138 (2003-10-01), Shannon et al.
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patent: 6919694 (2005-07-01), Moyer et al.
patent: 2006/0097655 (2006-05-01), Takahashi et al.
U.S. Appl. No. 11/212,487, filed Aug. 25, 2005, Yao et al.

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