ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,154, issued on Jan. 27, was assigned to Hanwha Solutions Corp. (Seoul, South Korea).

"Relay driving apparatus for controlling operation of multiple switches" was invented by Jae Geun Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a relay driving device including a relay including a relay switch and a relay coil magnetically coupled to the relay switch to turn on or off the relay switch; a controller for outputting a first control signal; a first switch for receiving the first control signal and being turned on or off to supply or block a first current to the relay coil; a control resistor conne...