ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,224,621, issued on Feb. 11, was assigned to TMEIC Corp. (Chuo-ku, Japan).
"Power supply device" was invented by Hidenobu Tajima (Chuo-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply device includes an inverter, a voltage converter, a capacitor, a current detector, a counter, and a controller. The inverter converts DC power into AC power and supplies the converted AC power to a load. The voltage converter performs voltage conversion for a DC voltage from a battery. The capacitor smoothes the DC voltage from the voltage converter and inputs the smoothed DC voltage to the inverter. The current detector detects a battery current flow...