Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Gesellschaft MIT Beschraenkter Haftung

Daniel Lerchegger

Bernhard Sieβegger

Günther Hirschmann

A lamp base () for a high-pressure discharge lamp comprises an ignition transformer (), which is placed in the interior () of the lamp base () and which serves to ignite the gas discharge inside the high-pressure discharge lamp. To this end, the ignition transformer () comprises a core on which its windings () are placed. The core is formed by a first core part () and by at least one second core part (), which are each made of a ferromagnetic or ferrimagnetic material and are separated by at least one gap (). The first core part () has a cylindrical section on which the windings () of the ignition transformer () are placed, and core parts () are formed in such a manner that the core, apart from the at least one gap (), has a closed shape.

Lamp base for a high-pressure discharge lamp and corresponding high-pressure discharge lamp

The invention relates to a circuit arrangement for operating high pressure discharge lamps and corresponding operating method, whereby the input voltage for the pulsed trigger device is increased by means of a series resonance loop (L, C), of a cascade circuit, or a symmetrical voltage doubling circuit.

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Munich, Germany

Daniel Lerchegger