The final PA uses a TH628 double ended tetrode in a cavity circuit. It is still
in design at present. The power supply will be working soon, charging a 225 uF
capacitor bank. Here is a link to the tube and the amplifier from some time
ago. It has changed since then. Also, a link to the tube manufacturer info:
http://www.g8wrb.org/data/Thales/Technical_documentation__diacrode.pdf
http://www.ominous-valve.com/images/th628_ruler.jpg
The paper may or may not display outside:
http://epaper.kek.jp/e02/PAPERS/TUPLE061.pdf
The important thing to note is that 'everything scales' from an 807 to a TH628.
Just more fireworks if I make boo boos.
73
John
K5PRO
> Message: 3
> Date: Sun, 12 Apr 2009 16:55:15 -0700
> From: "Bill, W6WRT" <dezrat1242@yahoo.com>
> Subject: Re: [Amps] multiple supplies in series
> To: amps@contesting.com
>
> ORIGINAL MESSAGE:
>
> On Sun, 12 Apr 2009 15:53:46 -0600, "John Lyles" <jtml@losalamos.com>
> wrote:
>
> >Four transformers each about 6 feet long, 5 feet tall, with 24 windings on
> >each one. Primary voltage is 4160 VAC three phase. It is a big power supply,
> >walk in with chain link fencing around it.
>
> REPLY:
>
> A suitable driver for the Poisson 'D Avril Contest, no doubt.
>
> Tell us about the final. :-)
>
> 73, Bill W6WRT
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