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Pat. 10476369 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H03F 3/217, H03K 17/16, H03K 17/567, H02M 1/00. High-efficiency fully soft-switching single-stage three-level (SS-3) power amplifier : Appl. N 15/648453 : Filed 12.07.2017 : Pub. 12.11.2019 : / Xue Jian Chen, Shilin Guo, Jianhui Su ; Assignee Guangdong Redx Electrical Technology Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10476369/en?oq=US10476369.html (дата обращения: ДД.ММ.ГГГГ).