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Pat. 11239757 United States, Int. Cl.22 H02M 3/158, H02M 3/00, H02M 3/07, H02M 7/483, H02M 1/00. Power conversion apparatus, and power supply apparatus : Appl. N 16/794219 : Filed 18.02.2020 : Pub. 01.02.2022 : / Satoru Fujita ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11239757/en?oq=US11239757.html (дата обращения: ДД.ММ.ГГГГ).