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Pat. 10320305 United States, Int. Cl.22 H01F 27/28, H02M 5/06, H02M 5/293, H03H 7/38. Transformer : Appl. N 14/912568 : Filed 08.08.2014 : Pub. 11.06.2019 : / Kenichi Hirotsu, Nobuo Shiga, Hideaki Nakahata, Takashi Ohira, Kyohei Yamada ; Assignee Toyohashi University of Technology Nuc, Sumitomo Electric Industries Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10320305/en?oq=US10320305.html (дата обращения: ДД.ММ.ГГГГ).