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:
Jan. 30, 2018
Filed:
Jan. 28, 2016
Fuji Electric Co., Ltd., Kanagawa, JP;
Kenichi Nishijima, Nagano, JP;
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Abstract
A switching power supply includes a switching element that turns ON and OFF a current flowing through a primary coil of a transformer to which a DC input voltage is applied, an output circuit that rectifies and smooths a voltage induced in a secondary coil of the transformer T to generate a prescribed output voltage, and a control circuit that uses feedback control to turn the switching element ON and OFF according to a feedback voltage obtained from the detected output voltage. The switching power supply also includes a supply voltage generation circuit that rectifies and smoothes a voltage induced in an auxiliary coil of the transformer to generate a plurality of supply voltages, an output voltage switching circuit that switches the output voltage according to a magnitude of a load to which the output voltage is supplied, and a supply voltage switching circuit that selects one of the supply voltages according to changes to the output voltage and supplies that supply voltage to the control circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile