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:
May. 20, 2025
Filed:
May. 31, 2023
Ihi Corporation, Tokyo, JP;
National University Corporation Hokkaido University, Sapporo, JP;
Abstract
A common mode filter circuit comprises a common mode transformer unit, an inverter, and a capacitor unit. Each of the first common mode transformer, the second common mode transformer, and the third common mode transformer comprises a first secondary wound wire, a second secondary wound wire, a third secondary wound wire, and a primary wound wire. A ratio of a number of turns of the primary wound wire to a number of turns of the first secondary wound wire, a ratio of a number of turns of the primary wound wire to a number of turns of the second secondary wound wire, and a ratio of a number of turns of the primary wound wire to a number of turns of the third secondary wound wire are each 3:1 in each of the first common mode transformer, the second common mode transformer, and the third common mode transformer.