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Voltage/Length (fwd)
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From: Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Tuesday, February 10, 1998 4:04 PM
To: Tesla List
Subject: Re: Voltage/Length (fwd)
Hi Jim,
I have to disagree with you:
> From: HomerLea-at-aol-dot-com [SMTP:HomerLea-at-aol-dot-com]
> Sent: Monday, February 09, 1998 10:12 AM
> To: tesla-at-pupman-dot-com
> Subject: Re: Voltage/Length (fwd)
>
> In a message dated 98-02-09 05:51:45 EST, you write:
>
> > > The equation Vs = Vp sqrt(Cp/Cs) follows directly from
> > > Conservation of Energy, and simply sets an _upper limit_
> > > for Vs. It's true that Vs can drop below this amount
> > > if the coil is inefficient, but Vs can never be _larger_
> > > than this quantity.
> >
> > Unquestionably true!
> >
> Not so!!!!!!!!!!!!!!!!!!!!!!!! It seems that the whole idea of a Tesla
> coil(resonance) is being overlooked in this discussion. The above equation is
> valid if, one time, you take all the energy from one capacitor and transfer
> it to another cap.
That is exactly what you are doing in a disruptive TC. Each primary
cap charge is separate from the previous one at the typical break
rates we use. Even if a spark doesn't issue, the power still gets
lost before the next primary cap discharge. If you put too large a
topload on your system, it will never break out. Check it all out on
an oscilloscope.
> In a resonant system you are taking oscillations or pulses
> from one system (Tesla primary) and adding them up in a second system (Tesla
> secondary -- an LC energy storage reservoir).
>
> The equation Vs = Vp sqrt(Cp/Cs) should be Vs = Vp sqrt(NCp/Cs) where N is
> the number of cycles or pulses transferred from the primary (if at 100%
> efficiency).
>
> A bigger torroid gives a bigger spark because it allows the voltage to rise
> to a higher value before "breakout"(allowing N to be larger). If 100%
> efficiency could be reached, a giant torroid would allow the primary to pump
> up the secondary LC system for a week with one spectacular spark at "breakout"
> from the torroid (and a very large voltage).
>
> jim heagy, rambling on
Time for the scope I think.
Malcolm