Re: [CAD_CAM_EDM_DRO] Voltage, Current, Resistance and Heat?

Tom Hubin wrote:

>>Recently, I changed out that driver board for the Hobby CNC driver
>>board which is a chopper driver. I set this unit up at 1/4 step and
>>it runs very smooth and I could achieve higher RPMS which is cool.
>>But, in playing around with it for the last 2 days, I noticed
>>another COOL thing, the motors barely get warm to the touch - they
>>run very cool.
>>
>>After some tuning, I believe I have the torque pretty close on the
>>new board as the old board. But still, the motors run cooler.
>>
>>This got me to thinking about something I read somewhere.
>>
>>"Torque is directly related to current"
>>

This is likely something I wrote, but it applies most specifically to DC
brush
SERVO motors. Since a stepper motor draws current when standing still
and not delivering torque to any load, it is obviously NOT applicable to
steppers.

Jon