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Pat. 9979312 United States, Int. Cl.22 H02M 5/293, H02M 1/32, H02M 1/44, G05F 1/12, G05F 1/44, G05F 1/445, H02M 5/22, H02M 5/257, H02M 5/275. Energy saving high frequency series buck AC voltage regulator system : Appl. N 15/316162 : Filed 12.01.2015 : Pub. 22.05.2018 : / Neal George Stewart, Wing Ling Cheng ; Assignee Edge Electrons Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9979312/en?oq=US9979312.html (дата обращения: ДД.ММ.ГГГГ).