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Pat. 11258289 United States, Int. Cl.22 H02J 7/02, G05F 1/575, H02J 7/00, H02M 1/42, H02M 3/335, H02M 1/00. Power supply circuit and adaptor : Appl. N 16/510143 : Filed 12.07.2019 : Pub. 22.02.2022 : / Chen Tian, Jialiang Zhang ; Assignee Guangdong Oppo Mobile Telecommunications Corp Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11258289/en?oq=US11258289.html (дата обращения: ДД.ММ.ГГГГ).