best stepper driver???????

[John S]

Lee the accepted figure is 2/3 for a parallel wired motor and 1/3 for a series wired motor.
These are figures that Marriss Fremanis at gecko drive came up with and are repeated as law.

So a 3a motor in parallel take 2a and 1a in series.

However I have had clamp ammeters fitted to power supply leads and running a system under rapids and loads i have never seen these figures, they have always been far less.

In fact in many cases the figures have been very small, far smaller than I would have imagined so the 50% is a far more acceptable figure.

One machine I used to convert I used 650 VA transformers at 50 volt AC, in a cost cutting exercise, due to rising copper costs, I dropped to 500 VA and saw no difference, a drop to 400VA still didn't make a difference but going to 330 VA did,

So the drop from 650 VA to 400 VA halved the transformer cost.