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Pat. 10110115 United States, Int. Cl.22 H02M 1/32, H02H 11/00, H02M 1/08, H02M 1/36, H02M 3/02, H02M 3/335, H03K 17/18, H03K 17/30. Switching power supply device with controlled discharge circuit : Appl. N 15/584286 : Filed 02.05.2017 : Pub. 23.10.2018 : / Masanari Fujii ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10110115/en?oq=US10110115.html (дата обращения: ДД.ММ.ГГГГ).