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Voltage/Length (fwd)




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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 . 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