The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Jan. 16, 2006
Holger Weinert, Aachen, DE;
Anatoli Saveliev, Aachen, DE;
Holger Weinert, Aachen, DE;
Anatoli Saveliev, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A circuit arrangement for operating a high-pressure gas discharge lamp has an igniting-circuit circuit arrangement having a capacitor able to be connected via two terminals to a voltage supply unit. The capacitor is connected in parallel with a primary winding of a transformer by a switching element that becomes conductive above a given voltage. The circuit arrangement also has a lamp-circuit circuit arrangement in which the high-pressure gas discharge lamp is connected on one side, via a secondary winding of the transformer, to a terminal for connection to the voltage supply unit. The other side of lamp-circuit is connected, via an inductive element, to a second terminal for connection to the voltage supply unit. The inductive element is formed by an air core inductor or rod core inductor that is exposed or is encapsulated in an insulating substance and that has an inductance equal to or less than 20 μH.