Re: [CAD_CAM_EDM_DRO] Just to be completely sure - power supply size

I believe it should be 66%(2/3) not 33%(1/3).

Bob Campbell
Bob@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
Stepper Motors

----- Original Message -----
From: "ghidera2000" <ghidera2000@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, April 10, 2004 10:19 AM
Subject: [CAD_CAM_EDM_DRO] Just to be completely sure - power supply size


> Ok, I've manage to mis-remember this stuff before so I'd better
> check.
>
> Reading the Gecko stepper motor white paper, its says Bipolar motors
> use 1/3 of their rated amperage. With this in mind, If I have three
> 2.5A motors, the power supply needs to be (minimum) 2.5A - not
> 3x2.5A. Is this correct?
>
> If so, I'd likely go up to a 3A or 4A transformer just to be safe.
>
> I'm converting my A3977 based 3 axis driver schematic to opto-
> isolation. I'll post it for (brutal) scrutiny later today.
>
>
>
>
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