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:
Jul. 14, 2009
Filed:
Aug. 10, 2007
Sadanori Suzuki, Kariya, JP;
Hiroaki Asano, Kariya, JP;
Kiminori Ozaki, Kariya, JP;
Yusuke Yamamoto, Kariya, JP;
Takahiro Suzuki, Kariya, JP;
Sadanori Suzuki, Kariya, JP;
Hiroaki Asano, Kariya, JP;
Kiminori Ozaki, Kariya, JP;
Yusuke Yamamoto, Kariya, JP;
Takahiro Suzuki, Kariya, JP;
Abstract
A DC-AC converter for converting DC voltage to AC voltage. The converter includes a conversion circuit for converting DC voltage to voltage having a polarity corresponding to AC voltage. A filter circuit receives the converted voltage, smoothes the converted voltage, and outputs the smoothed voltage as AC voltage. A first switch operably connects the voltage conversion circuit and filter circuit. A second switch is arranged between input terminals of the filter circuit. An output current detection circuit detects overcurrent that is greater than a predetermined first threshold. When overcurrent that is greater than the first threshold is detected, the protection circuit stops the supply of power in the voltage conversion circuit, deactivates the first switch, and activates the second switch.