RE: [TCML] x-ray transformer for Tesla supply

["Rich & DJ" <rdj@xxxxxxxxxxxx>]

I agree with David and DC. When I was still working they were testing a
100Kv system and they had to run it in a 18' dia vacuum chamber. Not every
one has one of these. It was being moved to a 30' chamber when I retired.
Rich 

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of David Rieben
Sent: Thursday, December 06, 2007 8:59 AM
To: Tesla Coil Mailing List
Cc: David Rieben
Subject: Re: [TCML] x-ray transformer for Tesla supply

Hi DC, all,

Yes, the consensus of the list responses to this question only verifies
my own thoughts on this matter. >100 kV voltages  (or >30 kV volt-
ages, for that matter) would just be too unwieldy for practical use in
Tesla primary circuits. I think list member Scot 'Bunnykiller' Dingman
has documented the significant voltage standoff difficulties associated
just from seriesing (2) 14,400 volt pigs, overdriven with up to 280 volts
from a variac, given 'max out' primary circuit voltages of around 33 kV.

David Rieben




----- Original Message ----- 
From: "resonance" <resonance@xxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, December 05, 2007 10:26 AM
Subject: Re: [TCML] x-ray transformer for Tesla supply


>
>
>
> For reasons previously discussed on the list this is a bad idea.
>
> The HV requires extra insulation, is problematic, and simple not worth the

> effort.  You can achieve sparks up to 80 feet long with a standard 14.4 kV

> pole xmfr so why go to higher voltage when it's completely unneccesary?
>
> The caps require lots of current for rapid recharge and an x-ray xmfr will

> not put out 1 to 1.5 Amperes as a pole xmfr can easily do.  Plus, a pole 
> xmfr when recased weighs only approx 125 lbs --- compare to a large xray 
> xmfr at 350 lbs.
>
> Dr. Resonance
>
> Resonance Research Corp.
> www.resonanceresearch.com
>
>
> ----- Original Message ----- 
> From: "David Rieben" <drieben@xxxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Wednesday, December 05, 2007 8:18 AM
> Subject: [TCML] x-ray transformer for Tesla supply
>
>
>> Hi all,
>>
>> Has anyone on the list successfully used an x-ray transformer
>> anywhere near its rated output voltage to power a Tesla coil?
>> (operating at less than 30% of its rated output voltage doesn't
>> count :^). I have one friend that seems convinced that you could
>> make a killer coil by running the Tesla primary circuit with over
>> 100 kV but I've always been under the impression that the in-
>> creased corona losses coupled with the required dramatic increase
>> in voltage standoff would make such a circuit impractical. Also,
>> the primary capacitor(s) would have to be able to withstand several
>> 100 kVs although it's rated capacitance could be relatively small.
>> I'm certainly not trying to demonize x-ray trannies (the old style
>> 60 hz ones, that is) as they absolutely ROCK! With my 150 kVp,
>> 600 mA rated 500-600 lb unit, I can self start arcs at 12" with <
>> 90% of its rated input voltage and 'pull out' 40" power arcs while
>> pulling over 120 amps through my Green Monster coil's variac and
>> ballast for 10 minutes at a time and the outer tank surface never
>> gets the slightest bit warm! Whooppee!! However, I do not believe
>> these transformers are practical as Tesla coil power sources. Any-
>> one have any other viewpoints, opposing or supporting? ;^)
>>
>> David Rieben
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
> 


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