RE: [TCML] RF transformer design

["Jim Mora" <jmora@xxxxxxxxxxx>]

Hello,

I was carrying on a dialog with the Geek group to build a Cap charger and
purchased a big dual ferrite U core that I was going to try and make a
charger out of. I think it was Steve that was offering me input on one he
built. Shortly after that a bought a -50KV 8KJ/sec Lamda Cap charger off
Ebay for a song. It needed minor repairs and a remote signal control box to
be built and it works perfectly now! What a find. Anyway I have the new
50ALL 102-57-25-0000 dual ferrite U core unopened. Contac Steve or the Geek
Group for more details. I'll sell it 20% off cost. If you or anyone is
interested.

Jim Mora

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Scott Kraus
Sent: Friday, December 21, 2007 6:44 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] RF transformer design

Hi Finn,
   
   I don't know if you have seen Steve Ward's web page but he built a
capacitor charging power supply that sounds like it may be what you want.
   
  http://www.stevehv.4hv.org/
   
  Scott

Finn Hammer <f-h@xxxx> wrote:
  All,

One thing has been high on my wish list for quite some years now.

How to design a RF power transformer, on a ferrite core, without 
resorting to trial and error.

My experience with transformer design is limited to 50Hz, and Many of 
you all remember how I built the Porkchop, but that was simple.

My present needs are in the 20-50kHz, 15-20kW range.

I have been offered a limited time trial on IEEE enterprise, with 10 
free downloads, and perhaps there are papers there, describing a usable 
approach.
Pointers to papers are invited.
If there are any of you that can suggest text books on the subject, I`d 
be grateful too.

Together with Daniel Uhrenholt, I am in the process of making a CCPS, 
based on SLR topology, and I`m stuck on designing the output transformer.

Hope someone helps :-)

heers, Finn Hammer

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