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Pat. 11239740 United States, Int. Cl.22 H02M 3/335, H02M 1/00. Voltage sensing of an active clamp switching power converter circuit using auxiliary winding having an opposite polarity as a primary winding : Appl. N 16/823289 : Filed 18.03.2020 : Pub. 01.02.2022 : / Wanfeng Zhang, Richard M. Myers, Liang Yan, Junjie Zheng ; Assignee Huayuan Semiconductor Shenzhen Ltd Co ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11239740/en?oq=US11239740.html (дата обращения: ДД.ММ.ГГГГ).