On 01/16/2010 08:38 PM, Harry Veeder wrote:
> Steorn: Ok there is a whole load of things mixed up here. If we take > a classical view of any system, there are no losses or gains, just > changes in forms of energy. So your comment that the diode increases > losses is just not true - it changes theform of some of the energy > conversion. > > As for the change in inductance - its independent of rotational > speed. > > The amount of energy converted to heat thru Joule heating reduces > per revolution, but the amount of heat power produced is always the > same (same dutycycle, no BEMF). SAY WHAT???? Is that not exactly what Bill Beaty has been saying? As the motor revs up the resistive heat (i.e., the losses in the coils, the "Joule heating") drops. But that is the chain of reasoning that leads to the conclusion that it's not OU, so it can't be what was meant here.
