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Pat. 9989586 United States, Int. Cl.22 G01R 31/3187, G01R 31/28, H02M 7/487, G01R 31/50, H02M 1/32. Converter circuit and open-circuit detection method of the same : Appl. N 14/682122 : Filed 09.04.2015 : Pub. 05.06.2018 : / Liang Liu, Bo-Yu Pu, Yi Zhang, Hong-Jian Gan, Jian-Ping Ying ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9989586/en?oq=US9989586.html (дата обращения: ДД.ММ.ГГГГ).