Re: Motor Circuit

Hi Jon,

Yes, for a small DC motor, or universal. Hobby-type stuff.
Is the circuit any use for that? Can it be adjusted for say
a 300w DC motor? To drive a spindle. I use a trim router, but
it's too loud and dusty cutting MDF.

What's the OP?

Thanks for you help

John

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:
>
> John Hansford wrote:
>
> >Hello to all,
> >
> >I have a simple motor control circuit that "senses" the load
> >and compensates for it. My friend Bill found this circuit in a
> >book he has and I thank him. I think it may be usable for a
> >slower spindle on a cnc machine if the circuitry is "upgraded"
> >to more power tolerant specs. I wanted to ask the opinions of
> >those who are good with this kind of thing.
> >
> >A simple gif file of the schematic is here....
> >http://www.cnc2u.com/files/Motor1.gif
> >
> >
> >
> This circuit is for a DC brush motor, not a 3-phase brushless motor, as
> the OP requested.
>
> Jon
>