[TCML] 35 KVA Vacuum Tube Tesla Coil

[Roger Smith]

On 7/5/2011 3:50 AM, Phil Tuck wrote:
> Roger,
> It's a change to see a nice sized discharge from a valve coil, but I have
> just realised that you said 35 kvA and not 3 and a half kvA! That means you
> are pushing the tranny by a factor of 7. Is this the reason you kept the
> run-time relatively short, or is that for the valve's sake?
> The actual physical size of the tranny looks relatively small against my own
> 5kVA core (which is 16 inches high and weighs 90 pounds) and I am surprised
> the core cross section isn't completely saturated.
> The fact it is out of its oil as well (mainly for cooling rather than
> insulation in this instance) certainly makes it a well-built tranny to my
> mind.
>
> Regards
> Phil Tuck
>
> www.hvtesla.com
>
>
>
> -----Original Message-----
> From: tesla-bounces at pupman.com [mailto:tesla-bounces at pupman.com] On Behalf
> Of Roger Smith
> Sent: 04 July 2011 10:46
> To: Tesla Coil Mailing List
> Subject: [TCML] 35 KVA Vacuum Tube Tesla Coil
>
>       I got a hold of a big ceramic triode (3cx10000a3) a few years ago and I
> finally built a tube coil with it.  It is powered by a 5 KVA pole
> transformer at up to 35 KVA and I am now getting 50"  fat bushy sparks.
>        Here is a link to the video on it
> http://www.youtube.com/watch?v=B8536fYHvGM&feature=feedlik
> <http://www.youtube.com/watch?v=B8536fYHvGM&feature=feedlik>       I
> haven't seen any other  VTTCs like it so It's hard for me jug the
> efficiency of it.   Any suggestions are welcome.
>
>       Roger
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Hi Phil ,     I found it hard to believe myself but I'm pulling 170 amps 
at 230 Volts.   After a few runs the transformer gets warm but not 
smoking hot.

     Roger