What is a square wave switching scheme? All Questions › Category: Power Electronics › What is a square wave switching scheme? 0 Vote Up Vote Down Karthik asked 4 years ago I need the information. 1 Answers 0 Vote Up Vote Down Jeff answered 4 years ago In the square wave, switching scheme, each switch of the inverter leg is on for one-half cycle i.e., 180 degree of the desired output frequency.