The UK Home Automation Archive

Archive Home
Group Home
Search Archive


Advanced Search

The UKHA-ARCHIVE IS CEASING OPERATIONS 31 DEC 2024


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Power supplies



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
>=20
> HI Paul,
>=20
> Easy..
>=20
> Connect 2 PSU's as follows.
>=20
> +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.
>=20
>            PSU1              PSU2
>      +               -      +               -
>       !               !       !               !
>       !               !-----!               !
>       !                    !                   !
>       !                    !                   !
>=20
>      +12V           GND           -12V
>=20
>=20
>=20
> Hope this makes sense
>=20
>=20
> Dave...
>=20
>=20
> ----- Original Message -----
> From: "Paul" <groups@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Thursday, May 22, 2003 2:48 PM
> Subject: [ukha_d] Power supplies
>=20
>=20
> 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 ?
>=20
> Paul.
>=20
>=20
>=20
> ** UKHA2004 BE THERE! ** - start planning now.
>=20
> http://www.automatedhome.co.uk
> Post message: ukha_d@xxxxxxx
> Subscribe:  ukha_d-subscribe@xxxxxxx
> Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> List owner:  ukha_d-owner@xxxxxxx
>=20
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/



Home | Main Index | Thread Index

Comments to the Webmaster are always welcomed, please use this contact form . Note that as this site is a mailing list archive, the Webmaster has no control over the contents of the messages. Comments about message content should be directed to the relevant mailing list.