US Patent 10141093 Reactor

A reactor that includes a coil made of a wound coil wire; a magnetic core on which the coil is arranged, and that forms a closed magnetic path, wherein the magnetic core has an inner core section that is arranged on an inside of the coil; and a heat dissipating sheet that is interposed at least partially between an inner circumferential surface of the coil and an outer circumferential surface of the inner core section that is opposite to the inner circumferential surface of the coil, wherein the heat dissipating sheet is in contact with the coil and the inner core section.