Re: 19 kV MOT stack? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 17 Jul 2007 20:43:15 -0500
From: resonance <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 19 kV MOT stack? (fwd)



A good cheap 14.4 kV pole xmfr in a walmart plastic tank would be more 
efficient and work better for this project.

Dr. Resonance
Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, July 17, 2007 11:40 AM
Subject: Re: 19 kV MOT stack? (fwd)


>
> ---------- Forwarded message ----------
> Date: Tue, 17 Jul 2007 08:35:58 -0700 (PDT)
> From: J. Aaron Holmes <jaholmes@xxxxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: 19 kV MOT stack? (fwd)
>
> :-?
>
> Straight away, the "19kV from 6 MOTs" bit sets off
> every alarm, but getting back to the more fundamental
> "NSTs as isolation transformers" idea:  Realize that
> your isolation transformers must pass every bit of
> power that your MOT stacks put out.
>
> ......
>
> So, if you want 19kV at 500mA from your MOT stack,
> that's 19kV * 0.5A = 8kVA.  8kVA would be eight or
> nine 15/60 NSTs.  If you had eight or nine 15/60 NSTs,
> you could just run them all in parallel for 15kV at
> 8kVA, right??  You won't pull much more from a NST
> than its rated power; the cores are designed to
> prevent it.  If you want, you can pry the NSTs out of
> their cans and modify the cores for more power,
> enabling you to use fewer of them.
>
> MOTs are onerous as it is, but...
>
> Cheers,
> Aaron, N7OE
>
> --- Tesla list <tesla@xxxxxxxxxx> wrote:
>
>>
>> ---------- Forwarded message ----------
>> Date: Mon, 16 Jul 2007 22:43:43 -0400
>> From: Scott Bogard <teslas-intern@xxxxxxxxxxx>
>> To: tesla@xxxxxxxxxx
>> Subject: 19 kV MOT stack?
>>
>> Hey everybody.
>>      I read in the archives that somebody tried to
>> parallel a MOT and NST to
>> get high voltage and current, but I have a slightly
>> different idea.  What if
>> you took a center tapped MOT or OBIT, to get your
>> volts up, and put the
>> outputs to the case of a MOT, to get oober current.
>> The first thing to come
>> to mind is shorting the MOT, but MOT stacks have
>> been successfully extended
>> to 8 MOTS, 6 more reliably, and by doing something
>> like this, you could put
>> the primary at a higher potential, reducing the
>> chance of an arc over.
>> http://www.altair.org/projects/MOTstack2.gif
>> So If you have a 15 kV NST, each side is 7.5 kV and
>> the MOT primary sits at
>> 2 kV, so the MOT primary is seeing 5.5 kV
>> difference, just over what a 6
>> stack would see, and less than an 8 stack.  So you
>> could get 19 kV with 6
>> MOTs and an NST, and you could float the  MOT cores
>> from the secondary to
>> reduce stress further.  My biggest question is would
>> excess current draw
>> from kill the NST or doesn't it work that way (would
>> the current come from
>> the MOT, or does it have to be pulled from the
>> ground in the center of the
>> NST or OBIT)?  Just a thought.
>> Scott Bogard.
>>
>>
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