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From: "Pacific Freight"
Newsgroups: sci.electronics.design
References: <3da2208f$1@news.comindico.com.au> <3da27bdd@news.comindico.com.au>
Subject: Re: computer power supplies in series
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Date: Wed, 09 Oct 2002 00:47:37 GMT
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"Trampas" wrote in message
news:wxzo9.19242$s5.788775@twister.southeast.rr.com...
> Purchase yourself a car battery charger, more current and 12Volts output.
>
> Trampas
>
****Car battery chargers go up to around 5A max. Unless you want a really
big one that will cost $$$. Also, not regulated enough. With the PC power
supply, I'll have 20A.
-Phil
> wrote in message
> news:anu4va$hfq$4$8302bc10@news.demon.co.uk...
> > Pacific Freight wrote:
> >
> > > I have been using a single PC PSU at 5V for electroplating metals but
I
> need
> > > more voltage now. Thinking of joining two together in series.
> >
> > > I'm starting to wonder how safe it is to use this power supply now.
With
> > > using liquids etc....especially if one of the outputs is tied to
mains.
> >
> > > So I want to know whether I can join two together in series and not
have
> any
> > > safety issues.
> >
> > Pretty much.
> > You'll need to find where (if?) the safety ground is connected to 0V on
> the
> > PSU.
> > Now, remove that link, and install one to 5V.
> > Simply connect this PSU to the other one the right way round, and you
> > have +-5V around ground.
> >
> > --
> > http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian
> Stirling.
>
> ---------------------------+-------------------------+--------------------
> ------
> > Two parrots sitting on a perch. One asks the other, "Can you smell
fish?"
>
>
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