Re: 3-1000z tube coil survived 1st light.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "David Trimmell by way of Terry Fritz <twftesla-at-uswest-dot-net>" <davidt-at-pond-dot-net>

Hi Ross,

Great performance for a first go (and only raw AC)! I looked at your Web 
Page and noticed your question of how hot your Vac tube should get. You may 
appreciate a answer too a similar question I asked the list a while back:

http://www.pupman-dot-com/listarchives/1997/february/msg00733.html

One thing I would recommend would be to add DC current monitoring of the 
grid. Your reporting of a 100 watt resistor over heating may suggest a 
higher grid R, grid C is not too critical (1000 - 4000 pF). Oh, yeah, the 
ceramic caps do drop C with age (use).

On the note of RF ground: Sounds like you have plenty. I find many (on this 
list) over emphasize the need for a RF ground suitable for a multi kilowatt 
transmitter >100MHz, for use in a <1MHz Tesla (Vac or spark) coil. Over 
measuring and calculating here is a waste of time, as many other factors 
will influence actual coil performance.

Good work (and documentation!),

Regards,

David Trimmell
www.ChaoticUniverse-dot-com

At 03:45 PM 1/16/01, you wrote:

> >From: "Tesla list" <tesla-at-pupman-dot-com>
> >To: tesla-at-pupman-dot-com
> >Subject: 3-1000z tube coil survived 1st light.
> >Date: Tue, 16 Jan 2001 07:43:39 -0700
> >
> >Original poster: "Ross Overstreet by way of Terry Fritz
> ><twftesla-at-uswest-dot-net>" <ross-o-at-mindspring-dot-com>
> >
> >Hi Guys,
> >
> >I managed to get the 3-1000z off to a reasonable start.  Although it is far
> >from optimized, and probably isn't even properly tuned, I managed beautiful
> >10 inch arcs on the 1st light.  No need to waste bandwidth here - go to my
> >page and click on "Vacuum Tube Tesla Coil" under the "Active Projects"
> >heading.
> >
> >I want to issue a special THANK YOU to all the people who so graciously
> >helped me with advice during this project. It's far from over so I hope you
> >aren't tired of VTTC questions yet <grin>.
> >
> >Thanks,
> >Ross-O
> >http://users.better-dot-org/roverstreet/
> >
> >
> >