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Pat. 11387743 United States, Int. Cl.22 H02M 7/06, H02J 3/38, H02M 1/00. Power supply device and control method for stably operating a device when a frequency of an input power supply fluctuates : Appl. N 16/631641 : Filed 19.02.2018 : Pub. 12.07.2022 : / Haruka Onishi, Teruhisa Murashima, Katsutoshi Sumida ; Assignee Panasonic Intellectual Property Management Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11387743/en?oq=US11387743.html (дата обращения: ДД.ММ.ГГГГ).