ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,043, issued on April 29, was assigned to MITSUMI ELECTRIC Co. LTD. (Tokyo).
"Insulated power supply apparatus" was invented by Hiroaki Takehana (Sagamihara, Japan) and Takumi Hyugaji (Isehara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An insulated power supply apparatus includes, a transformer; a switching element connected in series with a primary side winding of the transformer; an active clamp circuit connected between terminals of the primary side winding of the transformer; and a power supply control semiconductor device. The switching element includes a field effect transistor and a current-voltage conversion element is connected bet...