GF82.10-P-2007-01GH Xenon Headlamps, Function

GF82.10-P-2007-01GH Xenon Headlamps, Function
- with CODE (612b) Xenon headlamp unit

Function
The combustion chamber of the xenon lamp is filled with xenon and a mixture of metal halide salts. This mixture is ignited by high voltage. The color of the light has a characteristic similar to daylight.

When the low beam lamps are switched on the xenon headlamp control module (E1n1, E2n1) activates the xenon headlamp control module and ignition module (E1n2, E2n2) via the control voltage within a few milliseconds.

As a result of a high voltage surge (approx. 20 kV) of the ignition device, an arc forms between the electrodes, and the xenon lamp is ignited.

When an arc of sufficient stability is detected, the control electronics of the xenon lamp control module (E1n1, E2n1) switches over to power-limiting mode. The electric power is regulated to 35 W. A voltage converter generates the voltage of approx. 85 V ( ~) necessary for the reliable function of the xenon lamp. For technical reasons the xenon lamp has a timed startup characteristic. After switching on, 50 % of the luminosity is reached within 1 to 2 seconds and full luminosity is reached after approx. 30 seconds.