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Pat. 9998021 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/32, H02M 1/00, H02M 1/04, H02M 7/48. Forced zero voltage switching flyback converter : Appl. N 15/334173 : Filed 25.10.2016 : Pub. 12.06.2018 : / Kuang Ming Chang, Lin Chen, Qihong Huang ; Assignee Alpha and Omega Semiconductor Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9998021/en?oq=US9998021.html (дата обращения: ДД.ММ.ГГГГ).