What is free wheel diode?

A freewheeling diode, also known as a flyback diode, is a semiconductor device used to protect circuits by providing a path for inductive kickback current when the current through an inductive load (like a relay or motor) is suddenly interrupted. This prevents voltage spikes that could damage other components in the circuit. The diode is connected in parallel with the inductive load, allowing the stored energy in the inductor to dissipate safely. It is commonly used in switching applications to enhance circuit reliability.