ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,851, issued on April 8, was assigned to DELTA ELECTRONICS INC. (Taoyuan, Taiwan).

"Switch short-circuited diagnosis method" was invented by Kai-Wei Hu (Taoyuan, Taiwan), Ping-Heng Wu (Taoyuan, Taiwan) and Lei-Chung Hsing (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switch short-circuited diagnosis method includes steps of: determining an initial voltage interval of multiple voltage intervals according to voltage relationships between voltages of a first phase wire, a second phase wire, and a third phase wire; performing a switch short-circuited diagnosis of a first bidirectional switch module in the three consecutive voltage int...