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Pat. 11128220 United States, Int. Cl.22 H02M 3/158, G01R 19/175, H02M 1/42, H02M 1/44, H02M 7/219, H02M 1/00, H02M 1/32. Switching mode power supply circuit for three phase AC input : Appl. N 16/915711 : Filed 29.06.2020 : Pub. 21.09.2021 : / Renhong Li, Zhuo Shen ; Assignee Shanghai Tuituo Technology Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11128220/en?oq=US11128220.html (дата обращения: ДД.ММ.ГГГГ).