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Pat. 9882435 United States, Int. Cl.22 H02M 1/08, H02J 50/12, H02J 50/20, H02M 1/36, H02M 7/48, H02J 50/05. Resonant type high frequency power supply device and switching circuit for resonant type high frequency power supply device : Appl. N 15/027154 : Filed 31.10.2013 : Pub. 30.01.2018 : / Yoshiyuki Akuzawa, Kiyohide Sakai, Toshihiro Ezoe, Yuki Ito ; Assignee Mitsubishi Electric Engineering Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9882435/en?oq=US9882435.html (дата обращения: ДД.ММ.ГГГГ).