Библиографическая ссылка на патент
Pat. 10355578 United States, Int. Cl.22 H02M 1/08, H02M 3/335, H02M 1/00, H02M 1/088. Switching power supply with main switching device and secondary switching device : Appl. N 15/696977 : Filed 06.09.2017 : Pub. 16.07.2019 : / Kenichi Nishijima ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10355578/en?oq=US10355578.html (дата обращения: ДД.ММ.ГГГГ).