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Pat. 10826398 United States, Int. Cl.22 H02M 3/335, H03K 5/24, H02M 1/00, H02M 7/217. Apparatus and methods for sensing a variable amplitude switching signal from a secondary winding in a power conversion system : Appl. N 16/217914 : Filed 12.12.2018 : Pub. 03.11.2020 : / Zhao-Jun Wang, Qing Mcintosh ; Assignee Power Integrations Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10826398/en?oq=US10826398.html (дата обращения: ДД.ММ.ГГГГ).