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. 18, 2014
Filed:
Aug. 22, 2012
Yoshiyuki Uno, Nagaokakyo, JP;
Yoshiyuki Uno, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
In a switching power supply apparatus, a resonant capacitor and an inductor are connected in series between a primary winding in a transformer and a second switching element. A first rectifier smoothing circuit including a diode and a capacitor rectifies and smoothes a voltage occurring at a first secondary winding in the transformer during an on period of a first switching element to extract a first output voltage. A second rectifier smoothing circuit including a diode and a capacitor rectifies and smoothes a voltage occurring at a second secondary winding in the transformer during an on period of the second switching element to extract a second output voltage. A control circuit controls an on time of the first switching element and an on time of the second switching element on the basis of the first output voltage and the second output voltage.