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Pat. 10644607 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/40. Auxiliary power supply apparatus and method for isolated power converters : Appl. N 15/819209 : Filed 21.11.2017 : Pub. 05.05.2020 : / Yushan Li, Liming Ye, Heping Dai ; Assignee Futurewei Technologies Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10644607/en?oq=US10644607.html (дата обращения: ДД.ММ.ГГГГ).