Re: [CAD_CAM_EDM_DRO] Re:305oz Steppers! More torque, Scotty!!!! (Shes' breaking up, I cannah hold'er)

At 05:42 PM 5/8/2007, you wrote:

>Am I going crazy or have I missed something.

Phil,

You are posting and reading here, both are correct. 'nuff said.

The problem is that the torque curves depend heavily on what kind of
circuit is driving the motor. A voltage switch (no current limit,
current limited by winding resistance) has a very different curve
from a current switch (only the current matters, the voltage goes to
or above the supply to maintain the current.) At high speed, if the
voltage becomes high enough to push the current, it can matter, if
there is a compensation circuit so the voltage and current both run a
little higher at high speed, the curves really change.

David G. LeVine
Nashua, NH 03060