METHOD AND ELECTRICAL CIRCUIT FOR OPERATING A LIGHT SOURCE OF A MOTOR VEHICLE HEADLIGHT WITH DIRECT CURRENT, AND LIGHT MODULE OF A MOTOR VEHICLE HEADLIGHT COMPRISING SUCH A CIRCUIT AND MOTOR VEHICLE 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.