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:
Feb. 27, 2018
Filed:
Apr. 17, 2017
Onkyo Corporation, Osaka, JP;
Kei Asao, Osaka, JP;
Onkyo Corporation, Osaka, JP;
Abstract
To operate a switching power supply again automatically (automatic return) after the switching power supply is stopped for protection. A protection circuitincludes a bipolar transistor Qthat becomes ON state and sets current that flows to a photo couplerlarger in case that a temperature detection elementsupplies a detection signal, a control ICthat controls a switching element, and a protection power supply circuitthat includes a condenser Cthat is charged by output voltage from the switching power supply. Power supply voltage form the protection power supply circuitis supplied to the temperature detection circuitand the photo coupler. Further, in case that voltage value that is changed by the photo coupleris not more than a predetermined value, the control ICstops the switching element