TopRuslan

[Dog-One]

Question is then:  Stable for what reason?

I used to think the frequency of the Tesla coil was important, not so
sure anymore.  The output of the Tesla coil functions as an antenna
to the grenade coil, more specifically, a capacitor plate.  I have a hunch
the output frequency can drift somewhat, but must keep the capacitance
on the output (antenna) charged at all times.  When he touches that
output point and dissipates the charge, POOF!  The system stops.

So to me stability means potential, not frequency.  You have to
maintain the voltage on the output capacitor plate at all times.
It doesn't matter what the frequency is, you just need the voltage
there.

If that's the case, I think the Tesla coil is free running at whatever
optimal frequency it likes to run at.  If the capacitance changes
on the output, the frequency will naturally change to stay with it.

Keeping that output charged is why Ruslan stressed unipolar output.
Because if the Tesla coil was emitting AC, you would never charge
that capacitor plate--"Telsa will take back what she gives."

Looking at that little Tesla coil, it has to be operating at many
times faster than the push-pull and if the output is unipolar, it's
basically pulsed DC where the capacitor plate acts as a smoothing
cap, so it never discharges or swaps polarity.  Makes me wonder
if a simple HV transformer with a multiplier would provide the
same effect. Probably won't work--just a crazy thought.

[Dog-One]

I think regarding the grenade coil your not right.

This will excite the standing wave uppon eachother... there are patents about this subject

Grenade swings the standing wave... as stated by Ruslan... kacher is infact the exciter.

You are definitely on top this device.

So the grenade coil is where we produce the standing waves.
One wave of high current, moderate voltage comes from the
push-pull.  The other wave of high voltage, low current comes
from the Tesla coil.  The anti-node of the standing wave has to
develop at the load.  And to me, this load needs to be a bridge
rectifier and filter capacitor down to DC so that it is fixed at a
stable distance from the grenade coil.  Connected to this bridge
rectifier and filter capacitor, we need a fixed load so that the
end of the transmission line has a fixed impedance, that way
we don't end up chasing an anti-node that is moving all over
the place.

With the above in mind, what characteristics does our grenade
coil have to have?  We are talking about a transmission line
closed on one end and mostly closed on the other.  Inside this
transmission line will be where our input waves cycle back-n-forth
with consistent nodes and anti-nodes that we can physically
predict where they are--with an anti-node positioned exactly at
our load.  When I say waves, I'm not fully clear on what those
are.  We have both current and voltage amplitudes.  So an
anti-node of what are we looking for?  Just current?  Just voltage?
Will the current and voltage be in-phase?

Next, what frequencies do we need the push-pull and Tesla coil
to operate at?  How do we select a bandwidth so that any drift still
keeps an anti-node positioned at our load?  To me it is apparent
there is no reason to have each component to the standing wave
operate at the same frequency--one just needs to be a multiple
of the other; both have to fully fit within the transmission line.
It makes sense to tackle the more difficult one first.
On the push-pull side, the wavelength is so large, if we miss
getting a peak amplitude focused at the load, we're screwed
immediately.  The Tesla side will have a much smaller wavelength so
it will be touchy.  Getting a peak amplitude focused at the load and
staying there will take some serious work.  The next challenge will
be to get both peak amplitudes to be the same polarity so when they
form a standing wave, they add instead of subtract.

In looking at this from a different perspective, scale seems critical.
There is only a certain region in which the components we can get
our hands on will work reliably.  A small device will have frequencies
we cannot deal with and a large device will have displacement currents
that destroy the wiring.  I think Ruslan has focused us in about the
best power output size where we might have a chance of success.
Which is fine by me if we can replicate these things reliably and just
make them for any device that needs power.

Sure wish I could get Ruslan to comment on what I'm saying here and
correct my mistakes.  It would save us a boatload of trouble.

[apecore]

Dog- one,
Thanks for the additional formulation about standing waves and its complexity.
I see a lot of questions and test oppertunities.
I uploaded a vid regarding kacher impact on the grenade.
Current and voltage are in phase.
Some strange things can be noted.

Would be nice if we can clearify your discussion points with the help of my setup

[Dog-One]

I uploaded a vid regarding kacher impact on the grenade.

Here?  I don't see anything recent.

Would be nice if we can clarify your discussion points with the help of my setup

I'm confused about something fundamental...

If we look at the grenade coil as a transmission line, the resonant
frequency is telling us the length of the line and the velocity factor
all in one combined value.  So it essentially says:  Put X frequency
into this transmission line and it will exactly fit with a node on
each end.  A node can either be a negative to positive zero cross transition,
or a positive to negative zero cross transition.

Am I right about this?

Normally a transmission line can be any length because we typically
only input from one side and output from the other.  But here, things
are different.  In the grenade, the wave is going to reflect back-n-forth
off of each end with a low impedance on one end and zero impedance
on the other end.  We get full reflection off the 0 Ohm side and partial
reflection off the output side.  We also don't input our signal into one
side or the other.  We input our two signals somewhere in between
over a span of the transmission line.  So now things are getting really
complicated to figure out what the heck is going on inside the grenade
coil.  We must have a way to probe this thing since we can't see the
wave motion.  And even with our probes we still need to see in our
heads what is really happening inside.  It's almost like we have to
process a mental deconvolution function.

What does seem apparent to me are the waves have to align and the
nodes have to always sit in the same locations.  To do that, timing is
extremely critical and any delays have to be calculated exactly and
then we need a method to test with our probes to ensure they are
spot on.  Thirty centimeters is only one nanosecond when we consider
node positioning--more than 30cm when we apply a velocity factor.
This is where I get hung up.  There's no way a 50Khz push-pull wave
could fit inside the grenade coil.  A 2Mhz wave from a Tesla coil, yeah,
that could fit.  So if the high current wave from the push-pull cannot
fit, there would have to be blanking time from the Tesla coil until the
polarity of the push-pull swaps.  If somebody really understands how
this works, I'd like to hear an explanation.  Because to me looking at
the wavelengths involved, I don't see any real standing wave here at
all, just basic modulation.

[apecore]

You are right.

Inductor loop frequency never fit inside grenade wire.
I see the kacher wave apear on the inductor sinewave.

What I understand us that inductor frequency needs to be an odd sub harmonic from grenade frequency.
In order to hit (pulsig by PP) occurs at same moment as kacher does.

My vids are in the drive.
Added one doing the Ruslan method with 'open connection signal generater' in order to see if it matches with my 2Mhz point.