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:
Mar. 17, 2009
Filed:
Nov. 02, 2004
Luis Angel Barragan Perez, Zaragoza, ES;
Jose Miguel Burdio Pinilla, Zaragoza, ES;
Pablo Jesus Hernandez Blasco, Zaragoza, ES;
Sergio Llorente Gil, Zaragoza, ES;
Alfonso Lorente Perez, Zaragoza, ES;
Fernando Monterde Aznar, Zaragoza, ES;
Luis Angel Barragan Perez, Zaragoza, ES;
Jose Miguel Burdio Pinilla, Zaragoza, ES;
Pablo Jesus Hernandez Blasco, Zaragoza, ES;
Sergio Llorente Gil, Zaragoza, ES;
Alfonso Lorente Perez, Zaragoza, ES;
Fernando Monterde Aznar, Zaragoza, ES;
BSH Bosch und Siemens Hausgeraete GmbH, Munich, DE;
Abstract
A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequency that is different from the first, in such a way that noise having a frequency generated by the superposition of the first switching frequency and the second switching frequency is produced. The frequency converter circuit is operated in such a way that the frequency of the noise is lower than a first cutoff frequency and/or is higher than a second cutoff frequency.