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:
Jun. 28, 2005
Filed:
Apr. 04, 2003
Applicants:
Joji Kasai, Neyagawa, JP;
Kazuhiro Hida, Neyagawa, JP;
Hiroyuki Hirano, Maebashi, JP;
Inventors:
Assignee:
Onkyo Corporation, Neyagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M001/00 ;
U.S. Cl.
CPC ...
Abstract
In a switching power supply of the present invention, when a voltage output from start-up means is greater than a driving voltage produced by output means, the voltage from the start-up means is provided to control means, whereby the switching power supply can be started up reliably. Furthermore, when the voltage output from the start-up means is less than the driving voltage produced by the output means, the current path is blocked in the start-up means so that no voltage is provided to the control means from the start-up means, whereby it is possible to reduce the power consumption during the steady operation.