Re: [CAD_CAM_EDM_DRO] Sizing a power supply

I am in the middle of that myself. I was just reading the section on
power supplies on the gecko site when your e-mail came in. I saw some
information there that was very confusing to me. On my Bridgeport
conversion I have 6 wire nema 42 Compumoters. They are supposed to be
rated at 5A/phase. I am (for now) using the Oatley kit drivers rated at
100V and 14A. Just for grins I decided to hook my digital meter in
series with the power supply to the driver.I am running the six wire
motors in series with the center wire unused. While running, the
motor/driver drew about3.8A. But when holding(not turning) it drew 10A.
You have the 5A/phase times two phases ,I guess. Current cut-back at
idle would sure be nice. The motors would run a lot cooler also.
To put this in perspective, I am not an electrical expert. It has been
so long since I did anything like this that I had to look up Ohm's law.
Duh! I am learning as I go along. A lot of the research that I have done
in the last few months has brought some conflicting information. There
is a ton of information available on the internet but you can't just
believe it all.There are lot of knowledgable people on this list that do
this sort of stuff for a living. Time to shut up and listen.