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:
Oct. 05, 2021
Filed:
Jun. 22, 2018
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Kazunori Oshima, Tokyo, JP;
Masahide Ohnishi, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 50/70 (2016.01); H02J 50/12 (2016.01); G01R 31/40 (2020.01); G01R 31/52 (2020.01); H02J 7/02 (2016.01);
U.S. Cl.
CPC ...
H02J 50/70 (2016.02); G01R 31/40 (2013.01); G01R 31/52 (2020.01); H02J 50/12 (2016.02); H02J 7/025 (2013.01);
Abstract
Disclosed herein is a leakage detector provided in a device having a conversion circuit that converts a DC voltage and an AC voltage from one to the other and a grounded metal member. The leakage detector comprises: an average voltage detection circuit that detects the average voltage of voltages corresponding to a potential difference between a high-voltage-side terminal or a low-voltage-side terminal on the DC side of the conversion circuit and the metal member; and a leakage detection circuit that detects the presence/absence of a leakage based on the average voltage detected by the average voltage detection circuit.