(Solved): Pulse width modulation (PWM) is often used to control the speed of DC motors. a) Discuss and sketc ...

Pulse width modulation (PWM) is often used to control the speed of DC motors. a) Discuss and sketch the technique of PWM control. b) Explain the reasons why a MOSFET driver might be required to drive a DC motor when using the PWM output from a microcontroller, such as an Arduino. c) A MOSFET has a gate capacitance of \( 1200 \mathrm{nF} \) and requires a high switching time of \( 2 \mu \mathrm{s} \). Discuss if it would be possible for a microcontroller with a 3.3V digital output, such as a Lolin D1 mini, to achieve this switching frequency?