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Pat. 9893536 United States, Int. Cl.22 H01F 5/00, H01F 27/28, H01F 27/34, H01F 27/40, H01F 38/42, H02J 5/00, H02M 3/335. Electronic device : Appl. N 14/689037 : Filed 16.04.2015 : Pub. 13.02.2018 : / Min Zhou, Ke Dai, Ming-Hui Dai, Zi-Ying Zhou ; Assignee Delta Electronics Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9893536/en?oq=US9893536.html (дата обращения: ДД.ММ.ГГГГ).