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:
Jun. 14, 2016
Filed:
Feb. 20, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kiyoshi Ogasawara, Osaka, JP;
Takafumi Fujino, Osaka, JP;
Hiromichi Goto, Osaka, JP;
Teruhito Takeda, Hyogo, JP;
Satohiko Hosomi, Osaka, JP;
Kei Mitsuyasu, Osaka, JP;
Katsuyuki Doi, Osaka, JP;
Hideaki Abe, Osaka, JP;
Abstract
In a power supply device, a primary winding of a transformer is connected in series to a main switching element, and is connected in parallel to a series circuit of a resonance capacitor and a sub switching element. A secondary winding of the transformer is connected in series to a series circuit of a rectifying element and a resonance inductor. The capacitance of the resonance capacitor and the inductance of the resonance inductor are each set such that, when the sub switching element is in an on state, the waveform of the voltage that is generated between the first main terminal and the second main terminal of the main switching element takes a protruding curve shape, the voltage being generated due to a resonance phenomenon of at least the resonance capacitor and the resonance inductor.