Abstract: A lamp cooling system is provided in which a liquid-cooled lamp is connected to a flow circuit conduit for cooling liquid circulating through the lamp. A liquid/air heat exchanger is positioned in the flow circuit conduit to cool liquid flowing in the flow circuit conduit by heat exchange with air.

Abstract: A circuit for a Xenon lamp is disclosed comprising an inductor having first, second and third connectors between one terminal of the lamp and a power line, said first connector being connected to said power line, means connecting the third connector to a second terminal of the Xenon lamp, means including control conducting means connected between said second connector to either of said first and third connectors, and means for controlling the control conducting means to control shunting of said inductor between first and second power lines to control power input to the Xenon lamp.