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:
Nov. 09, 2010
Filed:
Jan. 26, 2006
Bernhard Wagner, Hamburg, DE;
Bernd Freiheit-jensen, Hamburg, DE;
Christian Vollertsen, Hamburg, DE;
Christoph Loef, Aachen, DE;
Cornelius Paul, Hamburg, DE;
Frank Mueller, Hamburg, DE;
Klaus Hoffmann, Hamburg, DE;
Marc Klingelhoeller, Hamburg, DE;
Wolfgang Rexhausen, Thomasburg, DE;
Bernhard Wagner, Hamburg, DE;
Bernd Freiheit-Jensen, Hamburg, DE;
Christian Vollertsen, Hamburg, DE;
Christoph Loef, Aachen, DE;
Cornelius Paul, Hamburg, DE;
Frank Mueller, Hamburg, DE;
Klaus Hoffmann, Hamburg, DE;
Marc Klingelhoeller, Hamburg, DE;
Wolfgang Rexhausen, Thomasburg, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A power supply power supply () comprising a DC voltage supply, a control unit and a plurality of high voltage channels (-) is suggested. Each high voltage channel () includes an inverter (IKTV), a resonance circuit, a transformer (TR), and a rectifier (RECT). The resonance circuit cooperates with the inverter (INV). The inverter (INV) is formed by a first switching unit and a second switching unit whereby a voltage of a first polarity can be applied to the resonance circuit in a first switching state, whereas a voltage of a second polarity can be applied to the resonance circuit in a second switching state. The switching states can be switched by the control unit in such a manner that in a first mode of an operation for high output power, the output power can be adjusted by changing the switching frequency in the range of the resonance frequency. In a second mode of operation for low output power, the output power can be adjusted by changing the duration of the switching state at an essentially constant switching frequency.