US Patent Issued on May 20 for "Common mode filter circuit and drive device" (Japanese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,814, issued on May 20.

"Common mode filter circuit and drive device" was invented by Koji Yamaguchi (Tokyo), Satoshi Ogasawara (Sapporo, Japan) and Shunsuke Ohara (Sapporo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 th...