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Pat. 10439567 United States, Int. Cl.22 H03F 3/04, H02M 3/335, H03F 1/30, H03F 3/08, H03F 3/185, H03F 3/217, H02M 1/00. Switching power supply and amplification device : Appl. N 16/159687 : Filed 14.10.2018 : Pub. 08.10.2019 : / Atsunori Kishimoto ; Assignee Onkyo Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10439567/en?oq=US10439567.html (дата обращения: ДД.ММ.ГГГГ).