What is quasi resonant converter? All Questions › Category: Power Electronics › What is quasi resonant converter? 0 Vote Up Vote Down Anonymous asked 2 years ago 1 Answers 0 Vote Up Vote Down Anonymous answered 2 years ago A quasi-resonant converter (QRC) works on the basis of using a resonant switching element. When the FET is then turned on, the element generates a resonant pulse which is then filtered by the output LC like a traditional switching converter.