Re: [CAD_CAM_EDM_DRO] AC brushless motors

On Thursday 07 October 2004 10:56, Stephan Kotze wrote:

> Why are AC brushless motors so expensive? Since they are much simpler
> mechanically, no brushes, coils are simpler etc. I fail to see why these
> things are so expensive. The whole idea behind AC Brushless was a
> sophisticated controller with a very simple and cheap motor. Now, I can
> build a AC brushless servo drive for less that $100, but would have to buy
> a motor at $$$$, this does not make sense.

Glad to hear it can be done to make a circuit.
I have been looking for circuits for servo motors which you can build
yourself.
Found nothing.
Does anyone know of a circuit on the web for servo motors with encoder to
build a CNC router ?