Back to results
US 6,191,540 B1Granted
Devices for powering a motor vehicle headlight discharge lamp
AssigneeValeo Vision
InventorsErick Herzberger, Jean-Marc Nicolaï
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeValeo Vision
InventorsErick Herzberger, Jean-Marc Nicolaï
Estimating the term…
A power supply system for an automobile vehicle headlight discharge lamp, the system including a DC/DC converter with a capacitor at its output, a DC/AC converter powered by the voltage across said capacitor, and a module for generating a high-voltage breakdown pulse designed to be connected in series with said discharge lamp to the output of the DC/AC converter, wherein it further includes a module for heating the electrodes of the discharge lamp design to be connected in series with the discharge lamp and the high-voltage pulse generator module and adapted to deliver, after the high-voltage breakdown pulse, a decreasing voltage which, at the terminals of said discharge lamp, is added to the voltage across the capacitor at the output of the DC/DC converter.
A power supply system for an automobile vehicle headlight discharge lamp, comprising a DC/DC converter with a first capacitor (Co) at its output, a DC/AC converter powered by a voltage across said capacitor (Co), a high-voltage pulse generator module for generating a high-voltage breakdown pulse connected in series with said discharge lamp to the output of the DC/AC converter, and an electrode-heating module for heating electrodes of the discharge lamp connected in series with the discharge lamp and the high-voltage pulse generator module and adapted to deliver a voltage which, at the terminals of said discharge lamp, is added to the voltage across the capacitor. (Co) at the output of the DC/DC converter, and which decreases after the high-voltage breakdown pulse.
Dependencies are inferred from the claim text.