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:
Feb. 21, 2012
Filed:
Nov. 22, 2006
Bernd Rudolph, Forstern, DE;
Bernd Rudolph, Forstern, DE;
OSRAM AG, Müchen, DE;
Abstract
A circuit arrangement for operating a discharge lamp (LA) with preheatable electrodes comprising: an input terminal for applying an input voltage (U); an output terminal for providing an output voltage (U) to a lamp generator (LG) for operating the discharge lamp (LA); a switching unit () for power factor correction which is coupled between the input terminal and the output terminal; a monitoring apparatus () which is adapted to switch off the lamp generator (LG) in the event of the presence of at least one switch-off criterion; an integrated circuit (), which is adapted to drive the switching unit () for power factor correction, the integrated circuit () having a disable input; and a blocking apparatus (), which is adapted to generate a blocking signal at its output when the lamp generator (LG) is switched off, the output of the blocking apparatus () being coupled to the disable input of the integrated circuit ().