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Pat. 10439431 United States, Int. Cl.22 H02J 9/06, H02H 7/125, H02H 9/00, H02M 1/32, H02M 1/36, H02M 5/458. Method to reduce inrush currents in a transformer-less rectifier uninterruptible power supply system : Appl. N 15/412476 : Filed 23.01.2017 : Pub. 08.10.2019 : / Charles F. Blair, Terry D. Bush, Xian Chen ; Assignee Vertiv Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10439431/en?oq=US10439431.html (дата обращения: ДД.ММ.ГГГГ).