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Pat. 9985542 United States, Int. Cl.22 H02M 3/335, G01R 19/175, H02M 1/32, H02M 1/44, H03K 5/1536, G01R 19/14, H02M 1/00. Controller IC with zero-crossing detector and capacitor discharge switching element : Appl. N 15/275379 : Filed 24.09.2016 : Pub. 29.05.2018 : / Leif Lund, David Kung ; Assignee Power Integrations Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9985542/en?oq=US9985542.html (дата обращения: ДД.ММ.ГГГГ).