RE: [TCML] 833A Tube

["Jim Mora" <wavetuner@xxxxxxxxx>]

Hi Rob,

I have been following the VTTC threads for quite awhile now. I recall that
ceramics drift as they heat so you go out of tank resonance. Mica seems to
be the cap of choice. What about CDC caps? There was some discussion of
strontium Titrate (is this close:-) ceramics which are better. I believe
Bert Hickman was discussing this. It's in the archives for sure!

Jim Mora

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Rob Byron
Sent: Thursday, January 29, 2009 9:21 AM
To: Tesla Coil Mailing List
Subject: RE: [TCML] 833A Tube

Hi jim, Dave, 
Thanks. I am planning to build my first VTTC and chose to use Steve wards
single 833a design. After seeing the $200 price for the tube I almost
scraped the idea. I can handle $90 for a tube. All the caps are going to set
me back as it is. I have two MOT's set aside for this project. I also have
some 1400pF 20Kv doorknobs from a laser project, does anyone know if these
will work for a VTTC? 

Rob. 


________________________

On 2009-01-28 23:38:09 -0700 Jim Mora <wavetuner@xxxxxxxxx> wrote:

> 
> Negative, check RF parts for new Taylor 833a's on special for $89.00. Try
to
> find some 833C which have a carbon and more robust plate. So I have have
> been told anyway.
> 
> http://www.rfparts.com/tubetran_specials.html These are new. Anyone know
> where Taylor tubes are made? I had two of them but sold them and found 4
> pulls on Ebay. 
> 
> Jim Mora 
> 
> When I build the quad I'll use the pulls to get in the ball park and then
if
> funds allow I'll buy 4 833C's. This won't be for some time.
> 
> -----Original Message-----
>  From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
Behalf
> Of Robert Byron
> Sent: Wednesday, January 28, 2009 6:51 PM
> To: Tesla List
> Subject: [TCML] 833A Tube
> 
> 
> Are these things really that expensive? 
> http://store.tubedepot.com/nos-833a.html
> Can anyone get one cheaper?
> 
> Rob._______________________________________________
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