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:
Jul. 26, 2005
Filed:
Jul. 18, 2002
Marcel Johannes Maria Bucks, Best, NL;
Engbert Bernard Gerard Nijhof, Best, NL;
Marcel Johannes Maria Bucks, Best, NL;
Engbert Bernard Gerard Nijhof, Best, NL;
Lumileds Lighting U.S. LLC, San Jose, CA (US);
Abstract
The invention relates to a switching arrangement for operating at least one LED, which switching arrangement is provided with input terminals () for connecting a supply source, —output terminals () for connecting the LED to be operated, —a first series circuit (I) between one of the input terminals () and one of the output terminals (), including at least a self-inductance (L), a capacitor (C) and a diode (D), —a second series circuit (II) between the input terminals, including at least the self-inductance (L) and a switching element (S) which is alternately switched to a conducting state and a non-conducting state at a high frequency, —a third series circuit (III) between the output terminals, including the diode and an inductive winding (SW). According to the invention, the inductive winding forms a first winding (SW) of a transformer (T) which has a second winding (SW) that forms part of the first series circuit and which also has a connection point with the first winding.