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Pat. 9882494 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/00. Switching-mode power supplies capable of operating at valley switching, and relevant control methods : Appl. N 15/407338 : Filed 17.01.2017 : Pub. 30.01.2018 : / Chih Chi Chang, Ming Chang Tsou, Meng Jen Tsai ; Assignee Leadtrend Technology Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9882494/en?oq=US9882494.html (дата обращения: ДД.ММ.ГГГГ).