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Pat. 9871452 United States, Int. Cl.22 H02M 3/335, H01F 38/42, H02M 1/44. Transformer, flyback converter and switching power supply with the same : Appl. N 15/224745 : Filed 01.08.2016 : Pub. 16.01.2018 : / Qiukai Huang, Xinlei Li, Zhiliang Hu, Chaopeng Jin ; Assignee Hangzhou Silergy Semiconductor Technology Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9871452/en?oq=US9871452.html (дата обращения: ДД.ММ.ГГГГ).