[Al Skierkiewicz]

The video is a nice discussion but the diode in the power MOSFETs is a fall out of the manufacturing process. The FETs used in our speed controllers all have them. The real benefit is the very low ON resistance source to drain compared to a normal transistor. One of the effects of the diodes is that the speed controllers light up when you push the robot with the power off. The current generated by the motors turning, ends up passing through the diodes and out to the power supply.