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Pat. 10116223 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/32, H02M 3/337, H02M 1/00, H02M 1/38. Switching power supply apparatus capable of achieving soft switching operation : Appl. N 15/429642 : Filed 10.02.2017 : Pub. 30.10.2018 : / Kazuhiro Horii ; Assignee Cosel Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10116223/en?oq=US10116223.html (дата обращения: ДД.ММ.ГГГГ).