Re: Stepper Wire ?

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:

> Not true. There may be voltages with square corners, but the

currents

> are very slowly changing triangle waves, due to motor winding

inductance.

I'm still wondering about the outcome of this. I'm currently (no pun
intended) using some scavenged 20ga-7-strand-
2-twisted-foil-shielded-pair wire on my motors, but it's not very
flexible at all and as you say, Jon, I worry about the durability
of the foil shielding with flexing.

Braid-shielded multistrand flexible cable is $$$, but Newark has some
Belden unshielded "Infinity" 9-million-flex rated cable (74x38 strand)
at $1.66/foot for 20-ga 4-conductor.

Are you implying that because of the slowly varying current, that
shielding is not necessary, or is that wishful thinking on my part?
My drivers are 2A current limited, and I'm running <=4000 steps/sec.

Best regards,

Randy