Circuit arrangement e.g. for motor vehicle dashboard, has measuring device coupled to LED for measurement of ambience brightness

摘要

A circuit arrangement incorporating a light-emitting diode (LED) has at least one LED (1) which in normal operation is driven from a supply source (2), and a measurement device (3) coupled to the LED (1) for measurement of ambient brightness by the LED (1) in a measurement operational mode. Independent claims are given for the following. (1) (A) Application of a circuit arrangement in a vehicle (2) (B) A method for controlling a LED.