Method and electric circuit for operating the light source of an automobile headlight by direct current, an automobile headlight light module comprising such a circuit, and an automobile headlight comprising such a light module

摘要

A method operates a light source of a motor-vehicle headlight with direct current. The light source is actually designed for operation with alternating current. The light source comprises an inductive load and is arranged between bridge sections of an electrical H-bridge circuit having four semiconductor switches. During alternating current operation, the light source is supplied with the alternating current via the H-bridge circuit. Two of the semiconductor switches are arranged at a top and actuated via a respective bootstrap circuit.