ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,505, issued on June 24, was assigned to TDK Corp. (Tokyo).
"Drive circuit" was invented by Kazunori Oshima (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bridge circuit (30) alternately applies a first voltage and a second voltage having mutually different polarities to a capacitor (200). A diode (41) is connected to one end of the capacitor (200). A diode (42) is connected to another end of the capacitor (200). A capacitor (50) is connected to the diode (41) and the diode (42). A control circuit (60) controls a plurality of switch elements included in the bridge circuit (30) in such a way that electric charge stored in the capacitor (200) ...