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:
Oct. 15, 2002
Filed:
Aug. 15, 2001
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A converter includes circuit elements for chopping a DC voltage, in which switch-on phases of the circuit elements are alternating. A circuit assembly with resonant elements is used for processing the chopped DC voltage and for producing an output voltage. The voltage present at one of the circuit elements is compared with a threshold in a dead time phase before the circuit element is switched on. The comparison result is used to determine whether an inductive or capacitive converter load is present. Alternatively, a differential quotient of the voltage present at one of the circuit elements during the dead time phase is used to determine whether an inductive or capacitive converter load is present.