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Pat. 9979307 United States, Int. Cl.22 H02M 3/335, H02M 1/00, H02M 1/32. Control circuits and methods for regulating output voltages using multiple and/or adjustable reference voltages : Appl. N 14/151967 : Filed 10.01.2014 : Pub. 22.05.2018 : / Kim Ly Kha ; Assignee Astec International Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9979307/en?oq=US9979307.html (дата обращения: ДД.ММ.ГГГГ).