Re: stepper power question(s)

it does seem that a simple matrix of 1,2 or 3 stacks and 17,23 or 34
would only be 9 typical wattages.

but if you look at any of the manufactures specs and do the math, you
can figure wattages for yourself. I did that as a comparison and
found that the same model for 1.5 V, 5V and 7V had different
wattages. so even though it is a good start, and may not be too
critical on the smaller ones, It seems that you will not get exact
values.

Dave

--- In CAD_CAM_EDM_DRO@y..., "jmkasunich" <jmkasunich@y...> wrote:
> --- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...> wrote:
> >
> > Figure 5W per coil for a single stack 23, 8W for a triple stack.
> > W = I^2 * R, so I = square root of W / R. Make W = 5 and R = 1.1
> > so I = 2.2A.
> >
> > Mariss
> >
>
> I've got a whole box of surplus mystery steppers that I've been
> wanting to ID, NEMA 17, 23, and a couple size 34. Most don't have
> all the specs printed on them. Do you have other "rule of thumb"
> numbers for wattage, for the other frame sizes?
>
> I assume single/double/triple stack has to do with the length of
> the motor. Are these lengths standardized? Is there a website
> or other resource that has all of the NEMA size motor dimensions?
>
> Thanks,
>
> John Kasunich