Discharge tube lighting apparatus

Details Discharge tube lighting apparatus Discharge tube lighting apparatus

2011-07-05

2011-07-05

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S308000, C315S2090SC

Reexamination Certificate

active

07973497

ABSTRACT:
A discharge tube lighting apparatus includes a converter that converts a voltage received from an alternating-current or direct-current power supply into a predetermined direct-current voltage and an inverter that converts an output voltage of the converter into an alternating-current voltage having a predetermined frequency. The inverter performs burst control based on an externally input dimming signal. The converter operates regardless of the active or inactive period of the burst control of the inverter and performs negative feedback control in response to a detection signal of a tube current in the active period of the inverter.

REFERENCES:
patent: 5479208 (1995-12-01), Okumura
patent: 5559395 (1996-09-01), Venkitasubrahmanian et al.
patent: 5751115 (1998-05-01), Jayaraman et al.
patent: 5914572 (1999-06-01), Qian et al.
patent: 6639369 (2003-10-01), Ribarich
patent: 6958580 (2005-10-01), Kamoi et al.
patent: 11-122937 (1999-04-01), None
patent: 2000-357599 (2000-12-01), None
patent: 3752222 (2006-03-01), None
Official Communication issued in International Patent Application No. PCT/JP2007/069647, mailed on Dec. 11, 2007.

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