What are the advantage of free wheeling diode in a Full Wave rectifier? DWQA Questions › Category: Basic of Electrical Engineering › What are the advantage of free wheeling diode in a Full Wave rectifier? 0 Vote Up Vote Down How Engineering Works Staff asked 7 years ago 1 Answers 0 Vote Up Vote Down How Engineering Works Staff answered 7 years ago Answer: It reduces the harmonics and it also reduces sparking and arching across the mechanical switch so that it reduces the voltage spike seen in a inductive load.