Patent ID: 9338842
Filing Date: 2016-05-10
CPC Classification: H05B,Y02B

Claim Text:
1. A pulse switching source for the LED lighting of the LED drive module for lamps in automobile applications provided with light sources having LED diodes and a drive module for the LED function and excitation, wherein the drive module comprises at least one resistance regulator working in pulse switching duty, which is connected by an input to the last cathode of a corresponding branch of the LED diodes and by an output to an input electrode of a switching element, which is connected by an output electrode to ground, while a controlling electrode of the switching element is connected to an output of a pulse generator with a set duty cycle in dependence on an input voltage from an input circuit, and the pulse generator with set duty cycle in dependence on the input voltage is connected both by a sensor input to the input voltage and by an external input to enable a plurality of lighting functions to an external signal, while an anode of a first diode in the string of the branch of LED diodes is connected to the input voltage.