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Pat. 9941044 United States, Int. Cl.22 H01F 27/28, H02M 3/335, H05K 1/02, H05K 1/11. Insulation type step-down converter : Appl. N 15/541400 : Filed 19.02.2016 : Pub. 10.04.2018 : / Koji Nakajima, Takashi Kumagai, Yuji Shirakata, Yujiro Kido, Kenji Nishizaka ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9941044/en?oq=US9941044.html (дата обращения: ДД.ММ.ГГГГ).