DC discharge lamp lighting device

Details DC discharge lamp lighting device DC discharge lamp lighting device

1990-02-09

1991-07-02

Pascal, Robert J.

Electric lamp and discharge devices: systems

Plural power supplies

315172, 315226, 315307, H05B 3700

Patent

active

050288440

ABSTRACT:
A DC discharge lamp lighting device includes a main discharge means providing a main discharge-lamp current to a DC discharge lamp including a filament and at least one anode to form between them a discharge path. The main discharge means comprises means for switching an applied voltage between a main discharge starting voltage in synchronism with a luminance control signal and a main discharge maintaining voltage. Any contribution of a current limiting resistance element to power consumption in circuit operation upon lighting of the discharge lamp can be reduced, thereby reducing heat generation.

REFERENCES:
patent: 4649322 (1987-03-01), Tellan et al.

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