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Pat. 10276344 United States, Int. Cl.22 H02M 5/42, H01F 27/24, H01J 37/24, H01J 37/32. Power supply apparatus able to control output current and power supply method using the same : Appl. N 15/664520 : Filed 31.07.2017 : Pub. 30.04.2019 : / Won Yong Sung, Keun Wan Koo, Byoung Kuk Lee, Seung Hee Ryu, Chang Seob Lim, Hong Kweon Moon ; Assignee New Power Plasma Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10276344/en?oq=US10276344.html (дата обращения: ДД.ММ.ГГГГ).