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Pat. 11189415 United States, Int. Cl.22 H01F 27/24, H01F 27/26, H01F 27/28, H01F 27/36, H01F 27/38, H02M 3/155, H02M 3/335, H02M 7/04, H02M 7/217, H01F 3/14. Magnetic element and switching power supply using the same : Appl. N 16/012869 : Filed 20.06.2018 : Pub. 30.11.2021 : / Zengyi Lu, Haijun Yang, Shaohua Zhu ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11189415/en?oq=US11189415.html (дата обращения: ДД.ММ.ГГГГ).