RE: Magnifer vs. Tesla Coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com> 




Actually, I spoke with Richard Hull regarding resonant frequency of the
secondary coil and he stated the following:

(From Richard Hull)
"The resonant frequency of the secondary or the extra coil turn out to
be pretty unimportant!  The key is to make the driver secondary very
tightly coupled and have only about 100-200 turns of heavy gauge wire on
a form more or less 6-10 times the diameter of the resonator or extra
coil.  The resonator/extra coil must have a lot more inductance than the
driver or, barring that at least a natural resonant frequency of half
that of the driver secondary.  The resonator must be toploaded to beyond
apparent reason and near to insanity.  A four inch diameter extra coil
should have at least a 50"X8" toroidal terminal.  Part of the art is in
fashioning this terminal system.  Even though the terminal of most tesla
systems is a high impedance point, the magnifier must be so grossly top
loaded that the output impedance is very low.  This means an arcing Q
that is ridiculously low.  The primary is tuned for whatever makes the
largest spark.  It is important that no visible corona exist on the
transmission line.  This means a giant diameter line.  1" copper pipe
minimum.  The key is to deliver large amounts of RF current into the
extra coil's base."

Dan


 >      I think that Richard said that the primary and the
 > capacitor should
 > resonate at 1/8 wave of the secondary coil. That's where
 > voltage and current
 > are both at 70% of their maximum. This could be thought of as a signal
 > generator to base feed the third coil, which should have a
 > huge topload on
 > it. If I remember correctly, the frequency off the top of the
 > secondary
 > should be the 1/4 wave frequency that the third coil resonates at.
 > The 1/8 wave configuration makes sense to me because
 > otherwise it would be
 > difficult to manage all the corona if it were set to run at 1/4 wave.
 > Richard even stated that you could build the coil to run at
 > 1/16 wave, where
 > the voltage gain would not be great but the current from the
 > secondary would
 > be terrific. Again, if this frequency is fed to the base of
 > the third coil
 > and it is 1/4 the wavelength of that third coil, it is
 > supposed to work.
 > I have not built one as of yet. What do the other maggie
 > builders think?
 >
 > Dave G.