Lighting system with caring preheating of gas discharge lamps

H - Electricity – 05 – B

Patent

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Details

H05B 41/00 (2006.01) H05B 41/14 (2006.01) H05B 41/295 (2006.01)

Patent

CA 2360052

In a lighting system which includes an electronic operating device and a gas discharge lamp with filaments, one filament terminal is respectively connected to an impedance network. The impedance network has an impedance function with a zero point at the frequency f1. For preheating purposes, the electronic operating device outputs a voltage whose frequency is close to the frequency f1. As a result, the voltage across the lamp is below the non-starting voltage during preheating.

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