Библиографическая ссылка на патент
Pat. 9893636 United States, Int. Cl.22 H02M 3/335, H02M 1/34, H02M 1/00. Systems and methods of operation for power converters having series-parallel mode active clamps : Appl. N 15/585715 : Filed 03.05.2017 : Pub. 13.02.2018 : / Vijay Phadke ; Assignee Apple Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9893636/en?oq=US9893636.html (дата обращения: ДД.ММ.ГГГГ).