ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,231,037, issued on Feb. 18, was assigned to Panasonic Automotive Systems Co. Ltd. (Kanagawa, Japan).
"Switching power supply device" was invented by Hideki Nakata (Kanagawa, Japan) and Atsushi Seki (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a switching power supply device, a control circuit controls a first thyristor, a second thyristor, and a switching element according to an input voltage. The control circuit maintains the first thyristor in an on state while maintaining the second thyristor and the switching element in an off state in a first period in which the absolute amplitude value is equal to or less than a first thresho...