[Amps] large RF PA and power supply

[John Lyles]

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 at yahoo.com>
> Subject: Re: [Amps] multiple supplies in series
> To: amps at contesting.com
> 
> ORIGINAL MESSAGE:
> 
> On Sun, 12 Apr 2009 15:53:46 -0600, "John Lyles" <jtml at 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