Re: stepper questions

Hi Dave,

Yes, 1/2 the current for a series connection. I Think you could say the
"rating" of the stepper would be 2X in that configuration. But we're
probably more concerned with the max voltage the driver can safely
handle. And that voltage should probably be less then 25X the motor's
voltage. We've now got 2X the inductance as well. Not optimum, but it
might be a solution for some cases.

Alan KM6VV


turbulatordude wrote:

> -
>
>>>Secondarily, full current thru both half-windings doubles I^2 * R
>>>losses,(twice the heat).
>>>
>>>Mariss
>>>
>>Yes, that's what I meant when I said "1/2 the current can allow...".
>>Instead of needing say 4A for a 1/2 winding, one can use 2A and the
>
> whole
>
>>winding. Again, won't run as fast! Full current through the whole
>
> winding
>
>>usually results in the magic smoke getting out of the stepper, if
>
> not also
>
>>the driver!
>>
>>Alan KM6VV
>
>
>
> yes, but don't you use 1/2 the current but twice the voltage ? that
> part us often lost somewhere.
>
> Dave
>