Quote Originally Posted by iugmoh View Post
I want to ask where I can put the flywheel protection diode across the winding motor or across (D-S) of mosfet and why , beacuse I damaged many mosfets and want to know what is the problem ?
The why part..
Think of an inductive load as an electrical spring. When the electrical pressure is released (turned off ) the current will reverse for a bit. The reverse current is what damages the MOSFET.