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:
May. 28, 2013
Filed:
Oct. 31, 2008
Fujio Kurokawa, Nagasaki, JP;
Fujio Kurokawa, Nagasaki, JP;
Nagasaki University, Nagasaki, JP;
Abstract
To detect a peak time of an exciting current of a transformer, a primary current corresponding to the peak time, or a variation time of the primary voltage, and to switch a switch after expiration of a predetermined period from the peak time, after the peak time occurs. A control apparatusis applied to a power conversion circuitwhich includes a switch circuitincluding one switch or a plurality of switches and a transformer. The control apparatus includes: an output voltage detectordetecting a value of an output voltage of the power conversion circuit; an exciting current peak time generatordetecting a peak time of an exciting current of the transformer; a timing generatorgenerating a switching timing of the one switch or the plurality of switches. The timing generatorgenerates the switching timing of the one switch or the plurality of switches on the basis of the output voltage and the peak time.