ALEXANDRIA, Va., June 16 -- United States Patent no. 12,658,813, issued on June 16, was assigned to TDK Corp. (Tokyo).
"Switching power supply apparatus and electric power supply system" was invented by Ken Matsuura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A switching power supply apparatus includes: a pair of input terminals; a pair of output terminals; a transformer; an inverter circuit including first and second switching devices, first and second rectifying devices as voltage clamping devices, a resonant inductor, and a resonant capacitor; a rectifying and smoothing circuit; a current detector detecting whether a current is flowing through at least one of the first rectifying device or the s...