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Pat. 10637279 United States, Int. Cl.22 H02H 9/00, H02H 9/04, H02J 9/06, H02M 7/12, H02M 5/458, H02M 7/487. Method of mitigating effects of AC input voltage surge in a transformer-less rectifier uninterruptible power supply system : Appl. N 15/880960 : Filed 26.01.2018 : Pub. 28.04.2020 : / Brian P. Heber, Xian Chen ; Assignee Vertiv Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10637279/en?oq=US10637279.html (дата обращения: ДД.ММ.ГГГГ).