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. 10, 2015
Filed:
Sep. 21, 2011
Hiroyuki Nishino, Osaka, JP;
Kazunori Kidera, Osaka, JP;
Mariko Nishi, Shiga, JP;
Abstract
An electric power supply apparatus, which enables a driving frequency of a switching circuit connected to a primary side of a transformer constant and output of a secondary side variable, comprises a transformer (), a series circuit of two first switching elements (Q, Q) connected between terminals of a direct current power supply (), an LC resonant circuit connected between both ends of one of the first switch element (Q) and a primary winding (Np) of the transformer (), bidirectional switch elements (Q, Q) connected to secondary windings (Ns, Ns) of the transformer () and having a rectification function and a phase control function, and a control circuit for inputting gate driving signals having a phase difference into the first switch elements (Q, Q) and the second switch elements (Q, Q).