Re: +/- 15V Supply

Hi,

Bipolar power supplies (+/- outputs) usually expect the loads from +
to GND and from - to GND. Consequently the GND terminal may be
connected via a wire to the chassis. This can be a problem if the
load is connected from + to -, where the - terminal now becomes the
GND for the system. The original GND terminal is unused in this case
but obviously must not connect to the case. Otherwise the "-" half of
the supply will be shorted out. Disconnect the chassis to GND
connection if it exists.

Mariss

--- In CAD_CAM_EDM_DRO@egroups.com, "Rich D." <cmsteam@a...> wrote:
> Mariss,
> If it's not beating a dead horse, would you expand on this GND'ing
> scheme. I understand the single tie point system, but involving the
> chassis/case is a point I'm at now without some guidance.
> The chassis should be at earth ground via the AC supply cord, of
course.
> On the DC side...... ?
>
> Rich D.
>
> Mariss Freimanis wrote:
> >
> > Hi,
> >
> > That should work just fine. You'll get 36VDC max at 15A. Make sure
> > the power supply case does not connect to your GND terminal.
> >
> > Mariss
> >