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Pat. 10505465 United States, Int. Cl.22 H02M 5/10, H01F 21/04, H01F 27/33, H02M 1/00, H02M 5/257. System and method of implementing an electronic brushless variable transformer for providing a variable AC output : Appl. N 15/665238 : Filed 31.07.2017 : Pub. 10.12.2019 : / Abbie Gougerchian ; Assignee Cms Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10505465/en?oq=US10505465.html (дата обращения: ДД.ММ.ГГГГ).