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Pat. 9960697 United States, Int. Cl.22 H02M 3/335, H01F 27/24, H01F 27/28, H02M 7/00. Insulation type step-down converter : Appl. N 15/517619 : Filed 06.11.2015 : Pub. 01.05.2018 : / Koji Nakajima, Takashi Kumagai, Yuji Shirakata, Yujiro Kido ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9960697/en?oq=US9960697.html (дата обращения: ДД.ММ.ГГГГ).