ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,092, issued on March 24, was assigned to GS Yuasa International Ltd. (Kyoto, Japan).
"Power factor correction circuit" was invented by Akiteru Chiba (Kyoto, Japan) and Keita Ishikura (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power factor correction circuit includes a series circuit in which a reactor L and a control switch Q1 are connected in series to both ends of a rectifier circuit 2 that rectifies input voltage of an AC power supply, a series circuit in which a synchronous rectification switch Q2 and an output capacitor C1 are connected to two main terminals of the control switch, and a control circuit 10 that alternately t...