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Pat. 9887635 United States, Int. Cl.22 H02M 3/335, H02M 3/337, H02M 1/08, H03K 17/61, H03K 17/691. Double-ended forward converter and power supply device : Appl. N 14/845139 : Filed 03.09.2015 : Pub. 06.02.2018 : / Yu Yonezawa, Yoshiyasu Nakashima ; Assignee Fujitsu Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9887635/en?oq=US9887635.html (дата обращения: ДД.ММ.ГГГГ).