Re: Worry, servo back powering Gecko

Alan,

Exactly right. Many motors are bi-directional transducers; they
convert electrical energy to mechanical energy and visa versa. As
stated before a step motor produces constant mechanical power; as
speed doubles, torque falls by half. This relationship holds in
reverse as well, as it outputs constant electrical power as a
generator.

At zero speed there is no information available about rotor position
so it is intrinsically useless as a repeater.

Mariss

--- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> Hi Mariss,
>
> Would that be because of more inductive reactance as the motors
speed
> up? How can we add POWER to this setup, and use them
for "repeaters"?
>
> Alan KM6VV
>
>
> mariss92705@y... wrote:
> >
> > Hi,
> >
> > Another interesting effect you may have noticed was the faster you
> > turned the motor, the less torque it took to turn it.
> >
> > Mariss