The true Tesla Coil

[gyulasun]

Hi,

Sorry to jump in, would like to draw attention to "resistance" in your text below which was meant to be impedance in the original text i.e. inductive reactance. The usage of the word "resistance" by the guy was a mistake, normally the word resistance refers to wire DC resistance,  see this Reply #13 and also Reply #16 on the same thread: http://www.overunityresearch.com/index.php?topic=173.msg1518#msg1518

So a permanent magnet can change the inductance of a coil wound onto a ferromagnetic core and this naturally involves the change in inductive reactance of course but the copper resistance of the coil does not change.

Thanks,  Gyula

I did some researching and I found some answers for you.  Basically magnets will change the inductance and resistance of the coil. If you don't know this you will see voltage changes that can deceive you. From some info I found where a guy tested putting magnets at each end of a fly back coil. The resistance and the inductance drops with the magnets. http://www.overunityresearch.com/index.php?PHPSESSID=4fd888aa4bb4c00ac57e21426c98c12f&topic=173.0

It is my belief that ZPenergy comes from Dielectric absorption. You fill the coil with a charge and the atoms of the coil and
air around it swing to polarity like tiny bar magnets. When discharged, the atoms swing back to their original positions. Like pulling back a pendulum then releasing it. The energy comes from the swing back. The swing back could possibly be a realignment with earths weaker magnetic polarity. Ignore the first paragraph http://en.wikipedia.org/wiki/Dielectric_absorption

[Bob Smith]

My conclusion in teslacoil is different. I believe that the real source of power of teslacoil is the earths magnetism. The primary coil vibrates the earths magnetic field and this what cause extra energy in the secondary. I made up with this conclusion when i notice there are similarities between teslacoil and magnacoaster. In inductor alone the power that put in is equal to the bemf. But when the magnet was added like in magnacoaster, the bemf become greater than the input. Same with teslacoil, the earth act as a magnet and this what cause an increase in power in the secondary.

Interesting comment Neo. Your Magnacoster thoughts remind me of a similar idea to from a regular poster named IST a few years ago on YT:
http://www.youtube.com/watch?v=NlBg-hVTIOM
bob

[gyulasun]

Hi Folks,

The Corum brothers have studied very thorougly the Tesla coil and some of their papers can be read freely on the net. See  here: http://www.tuks.nl/pdf/Reference_Material/Corum/  and if you read  paper "Tesla_Coils_and_the_Failure_of_Lumped-Element_Circuit_Theory"  then you find that the secondary coil is a quarter-wave resonant helical resonator, albeit it is a basically a single layer solenoid air core coil, positioned with its axis vertically and driven at its bottom.  Its voltage 'magnification' comes from the standing wave: any 1/4 wave long conductor or (elongated metal structure) has a voltage maximum at its end when excited either inductively or directly at its other end by a frequency which corresponds to the 1/4 times of the self-resonant frequency of this conductor (or metal structure, in this case this structure is a solenoid coil). 

Here is a series of a symposium video on the Tesla coil by James Corum:
http://www.youtube.com/playlist?list=PLD62DA65EE2471CE5

rgds, Gyula

[gyulasun]

...
Its voltage 'magnification' comes from the standing wave: any 1/4 wave long conductor or (elongated metal structure) has a voltage maximum at its end when excited either inductively or directly at its other end by a frequency which corresponds to the 1/4 times of the self-resonant frequency of this conductor (or metal structure, in this case this structure is a solenoid coil). 
....

Sorry Folks, here is the second half of the above sentence correctly:  any 1/4 wave long conductor or (elongated metal structure) has a voltage maximum at its end when excited either inductively or directly at its other end by the full wave frequency which corresponds to the self-resonant frequency of the full wave long conductor (or metal structure, in this case this structure is a solenoid coil). 

rgds, Gyula

[feresearcher]

Hi Greg:  Thought that you might like to know that Tesla's Wardenclyffe tower was simply
a very large impedance matching transformer, in between his radiant energy
Converter and the earth. Just like the one that is most likely on your house.

The 10,000,000,000 watts of free electricity was created in his lab by his
Radiant Energy Converter, which converted etheric currents into electric currents.
He then simply pumped this 10 billion watts of energy into the earth with his tower.
More Later,
Nik