Discharge lamp lighting apparatus for lighting multiple...

Details Discharge lamp lighting apparatus for lighting multiple... Discharge lamp lighting apparatus for lighting multiple...

2007-06-26

2007-06-26

Vu, David (Department: 2821)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Electric switch in the condenser circuit

C315S24100S, C315S242000, C315S243000

Reexamination Certificate

active

11132387

ABSTRACT:
In a discharge lamp lighting apparatus to light two discharge lamps, one terminal of the secondary side of a step-up transformer is connected to one terminal of each of the two discharge lamps, the other terminal of each of the two discharge lamps is connected, via each of two variable inductance elements, to one lamp current detecting unit, a signal of each lamp current detecting unit is connected to a lamp current control circuit, and an output signal from each lamp current control circuit is connected to each variable inductance element so as to vary the inductance of each variable inductance element, whereby the lamp current flowing through each discharge lamp is controlled.

REFERENCES:
patent: 5410466 (1995-04-01), Maehara
patent: 5512801 (1996-04-01), Nilssen
patent: A 11-260580 (1999-09-01), None

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