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Pat. 9973098 United States, Int. Cl.22 H02M 3/335, H02M 1/00. Fixed frequency discontinuous conduction mode flyback power converters employing zero voltage switching : Appl. N 14/873495 : Filed 02.10.2015 : Pub. 15.05.2018 : / Vijay Gangadhar Phadke, John Faustino Boqueo Begino, Iii ; Assignee Astec International Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9973098/en?oq=US9973098.html (дата обращения: ДД.ММ.ГГГГ).