ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,025, issued on April 8.
"Power supply apparatus" was invented by Ngai Kit Franki Poon (Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply apparatus comprising a power input portion, a rectifying portion, a power conversion portion, a power output portion and an electrical filter is disclosed. The electrical filter is connected intermediate the rectifying portion and the power output portion for reduction of switching noise generated during power switching operations of the power switching circuitry. With such an arrangement, the electrical filter operates in the DC portion of the apparatus and power loss is significantly reduced...