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. 17, 2011
Filed:
Sep. 28, 2007
Yoh Takano, Ogaki, JP;
Yoh Takano, Ogaki, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A circuit device includes: a first booster circuit, started by a predetermined input voltage, which converts the input voltage into a first boosted voltage higher than the input voltage; a capacitor, connected to the booster circuit, which charges the first boosted voltage; a second booster circuit, connected to the capacitor via a first switch element and started by a storage voltage in the capacitor, which converts the input voltage into a second boosted voltage higher than the first boosted voltage; and a second switch element which connects an output terminal of the second booster circuit with the capacitor. The first switch element turns on to start the second booster circuit so as to supply the storage voltage in the capacitor to the second booster circuit. After the second booster circuit has been started, the first switch element turns off to stop supplying the storage voltage. After the second booster circuit has been started, the second switch element turns on to supply the second boosted voltage to the capacitor.