Multi-lamp actuating facility

Details Multi-lamp actuating facility Multi-lamp actuating facility

2006-05-16

2006-05-16

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S291000, C315S308000

Reexamination Certificate

active

07045967

ABSTRACT:
A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average value for the level of the effective lamp current at the output terminals of the lamps and to control the inverter circuit, a number of current detecting devices coupled between the lamps and the low frequency control devices to obtain and send the average current value at the output terminals of the lamps to the low frequency control unit. A number of regulating devices are coupled between the lamps and the low frequency control unit, to maintain each lamp at the predetermined average value of the effective current.

REFERENCES:
patent: 3916251 (1975-10-01), Hernandez et al.
patent: 4396872 (1983-08-01), Nutter
patent: 6281641 (2001-08-01), Chen et al.
patent: 6856099 (2005-02-01), Chen et al.
patent: 6870330 (2005-03-01), Choi
patent: 6876157 (2005-04-01), Henry
patent: 2004/0032223 (2004-02-01), Henry

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