just find out you replied my post. but i did not knew about it at all. Basically, now i am having Variable resistor as input to PIC and PWM output as output from. The PWM signal will fed into the IGBT of MOSFET and vary the speed of the DC motor.
But now i am facing a problem on setting up the BUCK CONVERTER Circuit. I don't know which Diode to use? Can anyone provide me a prototype details? i have the circuit for the buck converter but when i connect it accordingly, it just doesn't work.