ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,447, issued on Oct. 7, was assigned to Delta Electronics (Thailand) Public Co. Ltd. (Samutprakarn, Thailand).
"Totem pole PFC with a surge protection circuit and surge protection method for a totem pole PFC" was invented by Robert Pohlmann (Soest, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure concerns a totem pole PFC with a surge protection circuit, wherein the totem pole PFC comprises at least one bypass-diode branch with at least two bypass-diodes, at least one switch branch with at least two switches, at least one polarity changer branch with at least two switches, an input bridge connecting the switch branch(es) with an i...