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Pat. 10170974 United States, Int. Cl.22 H02M 1/08, H02M 3/335, H02M 1/00. Variable frequency and burst mode operation of primary resonant flyback converters : Appl. N 15/718801 : Filed 28.09.2017 : Pub. 01.01.2019 : / Inhwan Oh, Abby Cherian, Manisha Pandya ; Assignee Apple Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10170974/en?oq=US10170974.html (дата обращения: ДД.ММ.ГГГГ).