Osram Sylvania Inc.

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Walter Bätz

John Cross

Bernhard Ertl

Torsten Kuske

A vehicle lighting system receives power from a power supply and includes a lighting control module, a lamp, and a ballast having a bias control circuit. The lighting control module provides a remote enable signal to the ballast in response to an input. The bias control circuit of the ballast receives a supply voltage from a power supply and the remote enable signal and selectively energizes a bias regulator circuit of the ballast as a function of the remote enable signal. When the bias regulator circuit is energized, a controller of the ballast operates the ballast to provide power from the power supply to the lamp.

Metal halide lamp ballast controlled by remote enable switched bias supply

A circuit arrangement has a first input terminal for a first voltage potential; a second input terminal for a second voltage potential; a third input terminal for feeding a starting voltage; a first electrical connection, which provides at its first end a first output terminal for a high-pressure discharge lamp, and which is coupled at its second end to the first input terminal for the first voltage potential; a second electrical connection, which provides at its first end a second output terminal for a high-pressure discharge lamp, and which is coupled at its second end to the second input terminal for the second voltage potential; a first inductor arranged in the second electrical connection; and a starting device coupled on the input side at least to the third input terminal for feeding a starting voltage, and on the output side to one of the output terminals, and a second inductor together with a first inductor.

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Sindelsdorf, Germany

Walter Bätz