[fox46]

I dunnooo... I know and totally agree with you on Ohm's Law and how it affects current. My thinking however, is that when the rotor is stalled, for each pulse the applied voltage per pulse would still be 12V and the current drawn would still be 87A for each finite pulse. If those pulses occurred only 20% of the time, they would result in 20% of the electrical power consumption. I have no doubt the "percieved" amperage and voltage change but if you look at the microcasm (?) of each pulse, the resistance of the Jaguar does not vary so neither would the supplied voltage/current per unit pulse. I don't mean to argue, i'm just trying to understand it from an operational aspect. If the Jaguar controlled power output like a Variac or a transformer with a rectifier - changing the actual DC voltage then I would completely agree with you but it doesn't. The jaguar doesn't actually change the voltage of the applied power, only the duty cycle it is applied.

I'll suppose I have to read up on speed controllers a bit more. Do the Jaguars have any published data that shows output power vs duty cycle?