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RE: Downconverter for AO40 ?

I couldn't agree more.  The 7812 is going to be
very warm while the switching regulator will run
much cooler.


-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
Behalf Of Frederick M. Spinner
Sent: Friday, June 13, 2003 14:34
To: faunt@panix.com; amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] Downconverter for AO40 ?

A switching regulator would even be better..

Fred W0FMS

>From: Doug Faunt N6TQS +1-510-655-8604 <faunt@panix.com>
>To: amsat-bb@AMSAT.Org
>Subject: Re: [amsat-bb] Downconverter for AO40 ?
>Date: 12 Jun 2003 14:55:29 -0400
>"Frederick M. Spinner" <fspinner@hotmail.com> writes:
> > The Transystems need some sort of 15V or greater power injector, so
> > the "external preamp" power on the 847 doesn't cut it.  There is a
> > standard (high dropout) 7812 internal to the Transystems..
> >
> > Fred W0FMS
> >
>Has anyone installed a low-dropout regulator into an AIDC converter?
>It seems to me that would be a good improvement.
>73, doug

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