ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,356, issued on Dec. 2, was assigned to KYOSAN ELECTRIC MFG. Co. LTD. (Yokohama, Japan).
"Power conversion device with current-auxiliary circuit" was invented by Koichi Miyazaki (Yokohama, Japan) and Hiroshi Kunitama (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion device according to the present invention comprises a plurality of class-D amplifiers disposed in parallel. An ON/OFF operation of a switching element of a lead leg and a delay leg of each class-D amplifier is carried out by a phase shift control, in which an auxiliary current is supplied to the class-D amplifier on the basis of a voltage difference between...