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Pat. 11408921 United States, Int. Cl.22 G01R 25/00, H02J 3/00, H02M 7/06. Circuit and method for realizing a combined connection of neutral wires or live wires using phase information of the neutral wires and the live wires : Appl. N 17/013668 : Filed 07.09.2020 : Pub. 09.08.2022 : / Xuegang Ren ; Assignee Shanghai Sinceretek Microelectronics Technology Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11408921/en?oq=US11408921.html (дата обращения: ДД.ММ.ГГГГ).