Re: CNC power supply question

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Ed Fanta <atex57@m...> wrote:
>
>
> Chris Baugher wrote:
> >
> > On Wed, 3 Dec 2003, Ed Fanta wrote:
> >
> > > Could a DC variable speed motor drive be used as a power source
for a
> > > Gecko or such? My thought is that there is no isolation from
line
> > > power.TIA. Ed.
> >
> > No. Variable DC speed controllers do not produce a constant
voltage.
> > Instead they produce a pulsed waveform with a variable duty
cycle, such
> > that the average voltage is relatively constant. A Gecko would
roast
> > immediately.
> >
> Another wild thought shot down in flames!! Better that than a drive.
> Thanks for the answer,looks like its back to looking for a
tranformer.
> Ed.