Resistor for current measurement

[Al Skierkiewicz]

Don't forget that the pulsed DC has very rapid rise times and in the Victors, full throttle is still DC. The Jaguars have a very short pulse at full throttle (to assist with internal FET control) but this pulse is so short it likely would not be sensed by a current transformer. At less than full throttle, a current transfomer would still be confused by direction changes, and induced currents flowing into the speed controller while the motor is winding down to a lower speed. As always, transformers operate by coupling changing magnetic fields into induced currents in the wires in that changing magnetic field. No changing field means no current.