RE: Power supplies

["Paul" <groups@xxxxxxx>]

Should chassis GND, AC GND and this new PSU 0V be connected together? Or
sh=
ould AC and chassis GND be kept separate from 0V on the PSU?

Paul.

> -----Original Message-----
> From: Dave McLaughlin [mailto:dave@xxxxxxx]
> Sent: 22 May 2003 15:13
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Power supplies
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> HI Paul,
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> Easy..
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> Connect 2 PSU's as follows.
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> +12V on second supply to GND on first. Your +12V is now the +Ve output
on
> the first supply and your -12V is the GND on the second supply. GND
will
> be
> the +Ve and -Ve (GND) on the joined connection. I'll try to do a
diagram
> below... I'll use a variable spaced font so make sure you use that
> yourself
> or it will look strange.
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>            PSU1              PSU2
>      +               -      +               -
>       !               !       !               !
>       !               !-----!               !
>       !                    !                   !
>       !                    !                   !
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>      +12V           GND           -12V
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> Hope this makes sense
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> Dave...
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> ----- Original Message -----
> From: "Paul" <groups@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Thursday, May 22, 2003 2:48 PM
> Subject: [ukha_d] Power supplies
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> I=92ve got a load of PSU=92s from a previous employer about 15 years
ago!=
I
> need
> a +12V and -12V supply for the circuit I=92m building but I only have
+12=
V
> (but lots of independent +12V supplies) =96 Can I connect multiple
+12V
> outputs together some how to get -12V ?
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> Paul.
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> ** UKHA2004 BE THERE! ** - start planning now.
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