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Pat. 11201553 United States, Int. Cl.22 H02M 3/335, H02M 1/088, H02M 1/38, H02M 3/158. Control method and control circuit for switching power supply circuit, and switching power supply circuit : Appl. N 16/699670 : Filed 01.12.2019 : Pub. 14.12.2021 : / Xunjin Dou, Aimin Xu, Xunwei Zhou ; Assignee Joulwatt Technology Hangzhou Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11201553/en?oq=US11201553.html (дата обращения: ДД.ММ.ГГГГ).