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. 24, 2017
Filed:
Jan. 04, 2017
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masato Himeda, Nara, JP;
Hiroyuki Asano, Nara, JP;
Abstract
A DC power supply device includes a rectifier circuit, a conversion circuit and a control circuit. Conversion circuit includes a first capacitor, a first series circuit, a second series circuit, a third series circuit, a second diode and a Zener diode. First series circuit includes a first inductor and a switching element connected in series with each other. Second series circuit includes a second capacitor and a second inductor connected in series with each other. Third series circuit includes a first diode and a third capacitor connected in series with each other. First series circuit is electrically connected between both ends of first capacitor. Second series circuit is electrically connected in parallel with switching element. A cathode of Zener diode is connected with a connection point of first inductor and second capacitor. Zener diode has a Zener voltage larger than an output voltage of conversion circuit.