ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,518, issued on June 23, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Switching power supply protection circuit and power supply system" was invented by Qingjun Chen (Foshan, China) and Shanghua Feng (Foshan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switching power supply protection circuit includes a protection circuit, a switching circuit, a voltage feedback circuit, and a control circuit. The protection circuit is connected to the switching circuit, the voltage feedback circuit, and the control circuit, and controls output switch-on or output switch-off, controls switch-on or switch-off of the switching circuit, and con...