Marx Tank schematic & tests of theorized voltage doubling

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

Original poster: "harvey norris by way of Terry Fritz <twftesla-at-qwest-dot-net>" <harvich-at-yahoo-dot-com>

Investigation of the 
voltage doubling priniciple made by Marx Tank method 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/

14 gauge coil in tesla tank firing/ position of spiral
sensor coil 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00072.JPG
Steel rulers are used for the tesla tank arc gap
firing at 15 volts 
variac to 15,000 volt, 30 ma NST (at normal  wall 60
hz frequency.)

Scoping of 10.7 mh and 2 nf in tesla tank,
1volt-at-1us/div 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00074.JPG
Note the higher vibration riding on a cycle time of 4
us, or 250,000 
hz, where 34,000 hz might be predicted by Thompsons
resonant freq 
formula R(f)= 1/ 2 pi Sq rt {LC}
The discrepancy might be  explained or noted that the
natural 
resonant frequency of the coil itself at 160,000 hz is
overiding the 
normal function that would reduce the frequency. Thus
it then 
becomese interesting to see if the frequency is also
then reduced by 
50% by doubling the capacity. 

Scoping of 10.7 mh and 4 nf in tesla tank,
2volt-at-1us/div 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00075.JPG
Here the scope is turned up to 2 volts per division to
show a higher 
amplitude signal, with most of the internal ringing
removed. However 
the frequency is not reduced 50% from the former
levels, but only a 
20% reduction to a cycle time of 5 us or 200,000 hz.
One might 
venture to speculate that when more capacity is added
this will give 
more voltage AND a further reduction of the overall
frequency. The 
operation at 2 nf consumes .6 amps at variac, and the
.4 nf gap 
registes .8 amps consumption. -at- 15 volts input. The
flip flopping of 
rf traces of polarity are very common in this
inductive sensoring of 
rf. Here the scoping also does this where the camera
has caught a 
trace showing only one polarity of the ringdown. The
operation of the 
gap is made to only use the least voltage to enable a
steady arc gap 
made by ~1/16  inch arc gap made by metal rulers,
where as mentioned 
this is 15 volts variac for the tesla gap and 7 for
the Marx gap. If 
the voltage were turned up the double  180 appearance
of the trace 
will more readily form.

Vertical position of sensor coil/ reduction of scoped
signal 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00076.JPG
This shows the reduction of signal at the former
levels of 2 
volts/div., and is the configuration that will be
tested with the Marx 
gap the see if it actually broadcasts this sort of
longitudinal em 
formerly found in marx gaps made with resonance of  LC
components to 
the source frequency.

Marx tank schematic/ test shows equal input and output
voltages 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00079.JPG
Here the marx gap is operated at 480 hz with
alternator input in open 
condition where each midpoint is given a ruler, and a
second voltage 
meter is attached at these midpoints. where each meter
registers 2.2 
volts, thus initially no voltage rise seems to be
apparent, however 
it is further thought thought this voltage itself is
180 out of phase 
with the input voltage as  scope centered phasings
from each two 
points in the circuit seem to indicate this.

Marx input and output scoping of voltage shows 180
phasing 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00078.JPG

Unfortunately only one of the three Tek scopes at
disposal have dual 
channel function. Additionally when the dual channel
was tried it 
would not show two 180 phased traces, which enormously
complicates 
this issue. In that situation if the input sensoring
of the voltage 
was reversed, then two traces would appear, where it
was noted that 
the interior voltage had practically vanished. Not
believing the dual 
channel information I decided to instead use two
separate scopes. In 
this case the same thing happens, in one polarity
hookup, this causes 
a reduction of signal strength on the interior
voltage, where both 
the scope and voltage meter show this.

Reversal of input scope connections wipes out output
voltage 
http://groups.yahoo-dot-com/group/teslafy/files/MARX/DSC00077.JPG

As mentioned if from this point one of the input
supply lines 
carrying the actual operation are removed, then the
cicuit will 
record about half the normal voltage of normal
operation. I will get 
back to the problem from this point and see if there
is actual 
amperage in that circuit, and the presence of voltage
in the one 
wuire circuit is unusual enough but if amperage exists
than this 
somehow implies the scope is providing a return path.
The sole wire 
containing a return path is then the scope voltage
sensoring across 
that stator input that remains after one wire of
delivery is removed.

Sincerely HDN