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:
Aug. 16, 2022
Filed:
Jan. 31, 2018
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Tatsuo Koga, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 1/00 (2006.01); H02H 3/24 (2006.01); H02H 5/04 (2006.01);
U.S. Cl.
CPC ...
H02H 1/0015 (2013.01); H02H 1/0061 (2013.01); H02H 3/24 (2013.01); H02H 5/04 (2013.01);
Abstract
An arc detection circuit includes: a current detector that detects a current supplied from a power supply apparatus via a transmission path; a voltage detector that detects a voltage applied to the transmission path; and an arc determination unit configured to determine whether an arc has occurred in the transmission path based on the voltage, when one or more particular frequency components of the current exceed a first threshold.