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:
Apr. 29, 2014
Filed:
Mar. 24, 2010
Applicants:
Akihiro Shinoda, Niiza, JP;
Kiyokatsu Satoh, Niiza, JP;
Hiroaki Kawaguchi, Niiza, JP;
Inventors:
Assignee:
Sanken Electric Co., Ltd., Niiza-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A switching apparatus includes a DC voltage output unit, a switching element to supply the DC voltage to a load, a power detection unit to detect power supplied from the switching element to the load, a drive unit to control the switching element in PWM manner according to an output from the power detection unit, and a stop unit to stop the PWM control if a value of the DC voltage is lower than a first threshold value. The first threshold value is lower than a minimum operation voltage value of the power detection unit.