Message-ID: <001601cb9617$35c861d0$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <34B6B123BCCD45749F47DE8CDEF8225A@ns94d01ae4d850> <4CFE043E.30609@online.fr> , <896D62DB781D4F0CA8CC2DB3479399A3@ns94d01ae4d850> <1285386885.3721767.1291717992842.JavaMail.fmail@mwmweb079> <4CFE1E26.1030903@kpnmail.nl> <1291728984.1600.15.camel@gerhard-desktop>
Date: Tue, 7 Dec 2010 14:01:13 -0000
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Subject: Re: LF: Searching for Power Supply 24V/10A
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Gerhard
It depends how much I(current you need) some only give about 1amp at=
 12v
whereas at 5v you get several amps.
also
you do not need a regulated psu for the PA just a good transformer cap=
able
of delivering the amps you need and plenty of C for smoothing.
I do not use regulated psu's on any of my class D or E amplifiers, but=
 I
have plenty of C
mal/g3kev

----- Original Message -----
From: "Gerhard Hickl" <gerhard.hickl@aon.at>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, December 07, 2010 1:36 PM
Subject: Re: LF: Searching for Power Supply 24V/10A


> Hello Horst!
>
> The cheapest way is to obtain 2 computer-power supplies from the
> junk-yard (=3D for free). Then you have to open both, disconnect the
> negative supply from earth-potential (but of course NOT disconnectin=
g
> the earth from chassis!!!) and connect the 12V supplies in series.
>
> This is simple and cheap!
>
> 73
> OE3GHB
> Gerhard
>
> Am Dienstag, den 07.12.2010, 12:44 +0100 schrieb pa3abk:
> > I'm using a Conrad PSU 24VDC @ 10.5A EA-PS 524-11-T from EA - Germ=
an
> > technology made in China ;-)
> > Best.-Nr.: 510120 - 62   [Teilenummer: 35 320 133]
> >
> > Didn't find any spurious yet of MF and HF although  using open fee=
ders.
> > There is also a sensor available to eliminate the voltage drop ove=
r the
> > cables.
> > It comes with mounting brackets.
> > A 48VDC version is available.
> > Just check Conrad.de for details.
> >
> > It's also possible to use the cheaper "mousetrap" PSU's, but as QR=
M and
> > noise is not acceptable I choose for this one.
> > The few euro's more doesn't justify the irritation and trouble to
> > eliminate the QRM.
> >
> > Initally I had the TX with unstabilized PSU, because Class E final=
 is
> > calculated with a certain voltage and associated L/C result was ra=
ther
> > irratic.
> > This PSU gave me a stable PA  24VDC/5,6A in and over 100W out.
> > Jan/pa3abk
> >
> >
> > Op 7-12-2010 11:33, Horst St=C3=B6cker schreef:
> > > Hello,
> > > I am looking for a power supply 24V/10A. Swiching power supply=
 would
> > > be the best choice to me.
> > > I got a new PA unit for my beacon DI2AN, but without power suppl=
y.
> > > Power can also be higher (up to 48V).
> > > vy73 Horst DO1KHS/DI2AN
> > >
> > >
> >
> >
>
>
>