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Pat. 10892688 United States, Int. Cl.22 H02M 3/335, H02M 1/38, H02M 1/00. Switching power supply apparatus control method and control circuit of switching power supply apparatus : Appl. N 16/699425 : Filed 29.11.2019 : Pub. 12.01.2021 : / Jian Chen ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10892688/en?oq=US10892688.html (дата обращения: ДД.ММ.ГГГГ).