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Pat. 11011989 United States, Int. Cl.22 H02M 3/158, H01J 37/34. Power supply circuit and method of operation thereof : Appl. N 16/745311 : Filed 16.01.2020 : Pub. 18.05.2021 : / Wei-Hsun Lai, Chien-Yu Wang, Po-Cheng Chiu, Wei-Cheng Lin ; Assignee Delta Electronics Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11011989/en?oq=US11011989.html (дата обращения: ДД.ММ.ГГГГ).