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Pat. 9991821 United States, Int. Cl.22 H02M 7/539, H02M 7/217. Transformerless multiple output capable power supply system : Appl. N 13/843401 : Filed 15.03.2013 : Pub. 05.06.2018 : / Michael H. Freeman, W. J. Weaver, Jr., Mitchael C. Freeman, Robert Dieter, Brian Santee ; Assignee Advanced Charging Technologies LLC ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9991821/en?oq=US9991821.html (дата обращения: ДД.ММ.ГГГГ).