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:
Dec. 14, 2004
Filed:
Sep. 02, 2003
Applicant:
Inventor:
Walter Limmer, Munich, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/702 ;
U.S. Cl.
CPC ...
H05B 3/702 ;
Abstract
The invention relates to the supply of power to a driver circuit (V) for a switching transistor (T) in an operating circuit, in particular for lamps. The supply is provided via a pump circuit with a potential isolation capacitor (C ), two rectifier diodes (D , D ) and an energy-storage capacitor (C ), and is independent of the reference ground potential of the switching transistor (T).