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:
Mar. 18, 2003
Filed:
Jul. 28, 1998
Toshiyuki Zaitsu, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A DC/DC converter is provided that includes a switch device for converting a DC voltage into an AC voltage, a piezoelectric transformer for changing the AC voltage and a current doubler type rectification-smoothing device, which includes a first diode, a second diode, a first inductor, a second inductor, and a capacitor. The piezoelectric transformer has one output terminal connected to a cathode of the first diode and to one terminal of the first inductor, and the other output terminal connected to a cathode of the second diode and to one terminal of the second inductor. Anodes of the first and the second diodes are respectively grounded. The other terminal of the first inductor is connected at a predetermined connection point to the other terminal of the second inductor. The connection point is connected to one terminal of the capacitor, whose other terminal is grounded.