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. 03, 2015
Filed:
Jul. 20, 2012
Tsuguo Nishimura, Yokkaichi, JP;
Tsuguo Nishimura, Yokkaichi, JP;
AUTONETWORKS TECHNOLOGIES, LTD., Mie, JP;
SUMITOMO WIRING SYSTEMS, LTD., Mie, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A switching power supply is provided including a transformer that transforms an AC voltage converted by a bridge circuit, and outputs the transformed voltage from a center tap between secondary coils, and two second switches that respectively cause both ends of the secondary coils to be brought in contact with and be separated from a fixed electrical potential. By the second switches being switched on/off, the switching power supply outputs the rectified DC voltage from the center tap. The switching power supply further includes two diodes connected to the both ends of the secondary coils, and cause the currents to flow from the both ends, a capacitor that stores the currents caused to flow, and a third switch that is connected between the capacitor and the center tap, in which, by the third switch being turned on, the capacitor is discharged to the smoothing circuit.