Zkw Group Gmbh

Zizala Lichtsysteme Gmbh

Daniel Petsch

The invention relates to a short-circuit fault detection illumination device () for a motor vehicle headlight, comprising

Short-circuit fault-detecting lighting device for a motor vehicle

The invention relates to a method for positioning a light-shaping member, for example a reflector (), relative to at least one light source (), comprising the following steps:

Method for positioning a light-shaping body

A light-emitting diode chain comprising a plurality of light-emitting diodes (LED. . . LED) connected in series and fed by a current source, in which each light-emitting diode is assigned a control circuit (), which has a series connection, connected in parallel with the light-emitting diode, between a reference voltage sink (D) of the voltage (U) and a controlled switch (Q) and is designed to compare the control voltage (U) at a control line () common to all control circuits, measured against is base point of the LED series circuit, with the voltage at the connection between the switch and the subsequent LED in the chain or the base point, and to close or to open the switch if the control voltage (U) falls below a predefined value or rises above a predefined value respectively.

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Gaming, Austria

Daniel Petsch