Re: Magnifer vs. Tesla Coil

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


These claims need further investigation.  A pole xmfr is capable of
providing much more current for very short periods of time, especially when
recharging cap banks.

If you run a pole xmfr with a current limiting device the pole xmfr will not
draw a complete sinusoidal current curve.  It usually is distorted somewhat
as the xmfr and reactance hit short periods of saturation.  It's a fast
event and requires a storage scope to monitor.

I became aware of this even by running a 130 turn current reactor set with a
climbing arc at 25 Amperes.  The reactor was wound with 12 AWG wire and fan
cooled.

After 2 minutes of operation the reactor was smoking hot.  It was handling a
lot more current as the pole xmfr hit saturation peaks.  The ammeter was
bouncing in the 35-45 Amp range.  The TC output was very high and the
"average indicated" power was around 35 Amps.

Now, we use 9 AWG on all of our reactors running at 25-30 Amperes.

John Couture first brought this to my attention approx 15 years ago when I
visited him in San Diego.  Perhaps he could comment on this phenomonea a bit
more as he is a retired power electrical engineer from a large electrical
provider out east.

Magnifiers do gain especially in the area of energy transfer.  With their
tighter coeff. of coupling more energy can be transmitted from pri to sec.
A double resonant transfer provides nearly 90-95% on the second max. peak
whereas a standard TC operates closer to 70-75% max at 0.2 coeff. coupling.
If not moe voltage they offer more current output which makes the sparks a
lot brighter.  Ed Wingate's coil is a very good example of this effect.  His
output sparks were very bright when captured on film as compared to a normal
classic TC.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913

 >
 > Richard Hull stated that magnifiers have obvious advantages over the
 > conventional Tesla coil. Indeed, his magnifier impressed us all with its
 > efficiency. I was there and video taped it in action. 11 feet of spark
from
 > 5 kw (or was it kva?) input power.  John Freau made a claim once (if I am
 > not mistaken) that he has never seen a magnifier out perform a
conventional
 > Tesla coil watt for watt. At first, I thought that this couldn't be, since
 > this magnifier that Richard Hull put together just had to be the most
 > efficient thing out there.  Then one day, while looking at Bill Wysock's
 > website, http://www.ttr-dot-com/model9_page2.htm he has images of the super
 > model nine coil producing 17 feet of spark at a stated 5kva input. So is
the
 > magnifier more efficient than a conventional coil? Yes, you can get many
 > times the secondary length in spark output that would not be possible with
a
 > conventional coil. It will be interesting to see where the magnifiers go
to
 > with renewed interest, and new heads and hands pushing the designs further
 > on.
 >      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.
 >
 >
 >
 > ----- Original Message -----
 > From: Tesla list <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Tuesday, November 11, 2003 7:08 PM
 > Subject: RE: Magnifer vs. Tesla Coil
 >
 >
 >  > Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
 >  >
 >  >
 >  > This is a heavily debated topic.
 >  >
 >  >  >From what i've seen so far, it seems that magnifiers are much more
 >  > efficient right off the bat compared to the
 >  > average conventional coil.  The best performance I've seen to date is a
 >  > video of Richard Hull's Magnifier 11 or something like that.  The free
 >  > resonator coil is 4" diameter x 13" in length and puts out over 10 foot
 >  > arcs using a relatively
 >  > low power (5kW?)
 >  >
 >  > However, magnifiers are much different beasts and have their own set of
 >  > complexities.  For example, the complexity of building a fast quenching
 >  > spark gap (usually rotary / series hybrid) may well be the crux of the
 >  > entire design and may
 >  > not outweigh the benefits of a magnifier.
 >  >
 >  > I don't have any personal experience with magnifiers yet as I am
 >  > building my first, but I definitely think it is worth
 >  > it to explore the tesla magnifying transmitter once you have already
 >  > built some conventional coils.
 >  >
 >  > Dan
 >  >
 >  >
 >  >  > I would like to know the advantage of a Magnifer vs. a Tesla
 >  >  > Coil. I would
 >  >  > like to build a magnifer as my next project.
 >  >  >
 >  >  > Thanks,
 >  >  >
 >  >  >
 >  >  > Paul S. Marshall
 >  >  >
 >  >  > _
 >
 >
 >