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Pat. 10833540 United States, Int. Cl.22 H02J 7/00, G01R 27/26, H02J 7/02, H02J 50/12, H02J 50/60, H02M 7/5387. Q-factor determination for foreign object detection circuit in wireless charging system : Appl. N 16/244059 : Filed 09.01.2019 : Pub. 10.11.2020 : / Fei Chen, Li Wang, Gang Li, Dengyu Jiang, Dechang Wang ; Assignee Nxp Usa Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10833540/en?oq=US10833540.html (дата обращения: ДД.ММ.ГГГГ).