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Pat. 9882508 United States, Int. Cl.22 H02M 7/44, H02M 1/00, H02M 1/08, H02M 1/42, H02M 3/156, H02M 7/48, H02M 3/04. High-frequency switching type conversion device : Appl. N 15/032197 : Filed 19.12.2014 : Pub. 30.01.2018 : / Naoki Ayai, Tetsuo Akita, Toshiaki Okumura, Kenji Abiru ; Assignee Sumitomo Electric Industries Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9882508/en?oq=US9882508.html (дата обращения: ДД.ММ.ГГГГ).