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Pat. 10338658 United States, Int. Cl.22 G06F 1/30, H02M 1/00, H02M 1/08, H02M 1/36, H02M 1/42, H02M 1/44, H02M 3/04, H02M 7/06, H02M 3/158. Power supply unit having an extended hold-up time : Appl. N 15/154450 : Filed 13.05.2016 : Pub. 02.07.2019 : / Tsai-Fu Hung, Shih-Chieh Wang, Kuang-Hao Chou, Dennis A. Martin ; Assignee Dell Products Lp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10338658/en?oq=US10338658.html (дата обращения: ДД.ММ.ГГГГ).