I bought a rack mount assembly which has 6 - 50v @ 50 A supplies in it. 3 x 3
in parallel. I only need to run one for legal limit.
As far as heat removal, it's not too difficult of a problem to solve with
attention to detail. I've long said, and been long shot down, that there
isn't much difference between tube cooling and ss cooling. If you look at a
3cx800, most of the tube is actually the "heat sink" The ceramic part of the
tube isn't really much bigger than a transistor, it is just shipped with it's
cooling mechanism from the factory. For solid state, it's up to you to build
that cooling yourself.
With 1 x BLF578XR you can easily run 1200 watts at 144 MHz. Is it
"continuous"? I haven't tried it, but 1"15' off and 45' on for wsjt it runs
fine for hours.
With 2 x BLF578XR you can easily run 1500+ watts at 144 MHz and use "forced"
air cooling with an array of muffin fans. If you wanted, there is no reason
you couldn't you a big blower to move even more air.
Date: Wed, 5 Jun 2013 22:20:47 -0700
From: Richard Solomon <email@example.com>
To: "firstname.lastname@example.org" <email@example.com>
Subject: Re: [Amps] Advice needed for SS amp
Content-Type: text/plain; charset=ISO-8859-1
As far as the Power Supply goes, there are still a lot of server supplies
there that deliver ~ 50 vdc @ ~ 50 Amps. Put a pair in series and you have
some serious power.
73, Dick, W1KSZ
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