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Pat. 10996284 United States, Int. Cl.22 G01R 31/50, G01R 31/14, G01R 31/28, G01R 31/327, G01R 35/00, H02H 1/00, H02H 3/16, H02M 3/10, H02M 3/155, H02S 40/30, H02S 50/10, H03B 29/00. Noise generation circuit, self-checking circuit, AFCI, and photovoltaic power generation system : Appl. N 16/233440 : Filed 27.12.2018 : Pub. 04.05.2021 : / Shengjie Zhang, Jintao Han ; Assignee Huawei Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10996284/en?oq=US10996284.html (дата обращения: ДД.ММ.ГГГГ).