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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 9:24 PM
To: tesla-at-pupman-dot-com
Subject: Re: Voltage/Length (fwd)
I am sending another note before everyone crucifies me. I was enlightened by
Greg Leyh while standing under his giant coil today that in the real world the
N in my equation is going to be one. You never get two or more pulses adding
up their energy in a real coil.
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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