[Amps] Source wanted for HV switch-mode power supply

[KD7QAE]

Paul,

Once you get it working, it would be straight forward to lay out a few 
PC boards so others could do what amounts to a kit build.  I would 
suggest a primary module with a separate PWM controller board that 
mounts to it with a single row Berg header and a secondary module to 
handle the rectifiers and filter components.  That's 3 easy to build 
boards.  I wonder how many folks would be interested in a build it 
yourself kit based around pre wound transformers adn these boards and parts?

Tomm, KD7QAE

Paul Decker wrote:
> Hi Mike, 
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> Yes, Tim Hulick, W9QQ went SK in late 2007, he was the owner of wattsunlimited. 
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> Over the past few months, I have been building a HV switch mode power supply based on his February 1991 QEX article.   I haven't quite gotten to the stage of actually powering it up with full voltage yet, but I am close (this weekend looks good!).   A ll the components are wired up in their respective modules.   If you do a search, you can probably dig up the article.   If not, let me know. 
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> Not to talk you out of it, but to be honest, for me, if I were to do it again, which I hope I will, I would go for a linear power supply unless there is a dire need for weight control.   The switcher I am implementing is very simple, but still far more complicated to build than the traditional power supplies. 
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> Regards, 
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> Paul, kg7hf 
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> Message: 3 
> Date: Tue, 19 May 2009 15:40:43 -0500 
> From: mikea < mikea at mikea.ath.cx > 
> Subject: [Amps] Source wanted for HV switch-mode power supply 
> To: amps at mikea.ath.cx 
> Message-ID: < 20090519204043.GA897 at mikea.ath.cx > 
> Content-Type: text/plain; charset=us-ascii 
>
> (maiden post here) 
>
> I've just got a Burle 8791, socket, chimney, and whatnot, and am looking 
> hard at building an amp. Does anyone know a good source for a suitable 
> switch-mode power supply -- 2500 V DC at about 750 mA? 
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> I've talked with Ralph W5JGV, but he's going to be taking care of a 
> medical disaster for some time and not able to do custom construction. 
> I really want to avoid big iron if possible, to keep cost and weight 
> down. If at all possible, I'd like one that can be turned on when I hit 
> the mike switch or key the first DIT or DAH, rather than one that takes 
> a few seconds to soft start. Watts Unlimited had precisely what I want, 
> but the proprietor appears to have gone SK. 
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> I'll also be looking at 2 KV supplies at .5 and at .25 A for a VHF amp 
> (2 x 4CX250B) and a UHF amp (single 4CX250K) later on. 
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