Discharge lamp lighting device and lighting system

Details Discharge lamp lighting device and lighting system Discharge lamp lighting device and lighting system

2007-09-11

2007-09-11

Vu, David (Department: 2821)

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Pulsating or a.c. supply to the cathode or heater circuit

C315S106000, C315S107000

Reexamination Certificate

active

11311373

ABSTRACT:
When a discharge lamp is preheated, impedance of a filament electrode of the discharge lamp is computed. In accordance with the computed impedance, preheating and lighting of the discharge lamp are controlled.

REFERENCES:
patent: 6552494 (2003-04-01), Randazzo et al.
patent: 7061188 (2006-06-01), Katyl et al.

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