Re: Power Supplies help...

The negative lead, post, ect. of many power supplies are connected to
their chassis. So is the ground wire for the 110vac power cord. If
the chassis are isolated from each other they may still be connected
thru the power cord, shorting out one power supply. If the the
negative lead is isolated and they are put in series the voltage
would double and the current would stay as rated. This is of course
for Transformer power supplies. Switching power supplies connected in
series would let the smoke out, blow fuses, ect.

Why not disconnect the regulator sections and get power straight from
the filter capicitors? This would increase your voltage output even
more, approx. 5 to 10 volts per power supply, and more than likely
isolate the grounds.

mike

> Thanks Russell... To make sure I understand, you mean that the

chassis of

> each power supply would be isolated from each other? And could

they share

> the same power input ( same outlet)? Does the amperage stay the

same?

>
> I bought this up, because it easier to find reasonable priced

supplies, but

> at lower voltages, now and then you will see them on e-bay. The

higher dc

> power supplies don't come cheap!
>
> RC
> ----- Original Message -----
> From: Russell Shaw <rjshaw@i...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Monday, March 18, 2002 5:46 PM
> Subject: Re: [CAD_CAM_EDM_DRO] Power Supplies help...
>
>
> > Yes, as long as the outputs on the supplies
> > aren't connected to the chassis internally.
> >
> > RC wrote:
> > >
> > > Does anyone know if it possible to hook-up two alike regulated

dc power

> supplies in series, like batteries, so that they would add there

voltages to

> form a larger power supply?
> >
> > Addresses:
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