Re: [CAD_CAM_EDM_DRO] brushless servo amp

----- Original Message -----
From: "Ernst Aardal" <eaardal@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Sunday, May 14, 2000 12:48 PM
Subject: Re: [CAD_CAM_EDM_DRO] brushless servo amp


well progress is being made but not as fast as I had hoped when I started
I've got the power output tripple half bridge board finished ,prototyped and
working so far with a simplified breadboard version of the control logic
its built on a 3X4" single sided board and is designed to be adaptable to
motors
from <24V up to whatever voltage you can find mosfets and optocouplers for
(or at least until the traces catch fire)
the logic board will be the same size but I'm having trouble getting my head
arround
some of the analog circuitry in the feedback loop
the original schematic for the logic board on my website is very wrong in
several places
but I'm working on getting it right

I have alot of documentation to catch up on for this project
so let me know if you have any questions

I have just updated my page at http://home.earthlink.net/~bfp/ with files
for milling the tri bridge power amp board
I used a plotter to draw the traces for the prototype so I have not yet
tried the NGC files
on a real mill

Brian

"Hobby" means never having to say you're behind schedule


Ernst wrote

> I just wonder if you have done any progress with this verry interesting
servo amplifier
> project?
>