The pulse width is 60ns measured @ 50% amplitude.  It's a W.I.P. and the LTspice sim.s are just a small part of it as I am designing/building a replication of the system (Salty Citrus Chinese replication https://www.youtube.com/watch?v=cni08WjLTcc), been at it for almost two years now..... If you are interested, check out my post @ http://www.overunityresearch.com/index.php?topic=2.msg54390#msg54390 on this subject. 
Hull's book has been out of print for almost 10 years now, P.M. me and I will email you a copy.

Hi Lost_bro. Thanks for the info. Nice workmanship there. So the sim was using 60 ns width pulses. That is interesting. Maybe
that is the secret of Don Smith's device. You maybe have to pulse the primary with very narrow ns width HV pulse discharges...
I think our mate magpwr here was trying something along those lines with the Akula cct setup, and he indicated that
he was getting some good results, although not sure what his exact results are. It seems he may have got dollar signs
in front of his eyes and went off to seek his fortune.

Regarding the 'trumpet waveforms' after each pulse on the primary, it seems some people interpret that as
an indication of 'negative resistance', but to me I think this is an indication that there is an (equivalent) positive
series resistance in the 'charging circuit' of the coils. This equivalent series resistance causes a coil being
energized by pulses on the primary to ramp up exponentially over time to the coil's max amplitude at the
coil's resonant frequency. My thinking is that this equivalent series resistance in this 'circuit' which 'charges'
the coil, acts to add a time constant to the coil's 'charging'. I could be wrong about that however.
That is just how it seems to be to me.

As an example of this time constant charging of a coil which results in a trumpet waveform on the coil after each
pulse is fired on the primary winding, I am attaching a scope shot of a quick setup using a HV sparkgap discharging into a coil.
I just placed my scope probe near the coil in the air to pick up the coil waveform as I didn't have my HV scope
probe handy, so the trumpet waveforms are somewhat distorted in this scope shot, but I think it is
good enough to show that the coil ramps up to its max voltage in an exponential 'trumpet waveform' fashion
when using sparkgap pulse discharges to 'charge up' the coil. My best guess of why this is happening is maybe because
the sparkgap has enough 'resistance' to it to cause the 'charging' of the coil to follow a time constant charging curve.
Maybe some others here have a different interpretation of this however, and if so I would be interested in
hearing what other people think causes the 'trumpet waveforms' after each pulse.
 

1 Kapandze's device needs an earth of some sort.
2 Kapanadze has to measure his wires PRECISELY (This is what he told me personally)
3 He makes one component himself which I strongly suspect to be a capacitor.
4 He uses BIFILAR windings. (Again this is what he told me after tens of hours of discussions)

How can you know for sure that Kapanadze did not hoax you?

If one asks Kapanadze a lot of nagging questions about his device then it could easily happen that he makes something up in order not to disclose anything real.

all he would need to receive the transmitted power would be an EARTH GROUND and
a reverse winding as per the Tesla spec.... and so would Akula, Ruslan and any other purveyor of "FREE ENERGY".
THE END.

What about Stepanov and his 3-phase transformer? Where can I find bifilar windings and precisely measured wires here?

And generally: Who says that we need a classic Tesla-style coil in order to get OU? I can't see such a coil in the 2004 video, just something like a cable extension reel.

But anyway: Why would a classic Tesla coil need that odd switching method?

"... the same must be tolerably free from inductive influences of other circuits."

Putting the extra coil at a 90 angle from the secondary would indeed make it "tolerably free from inductive influences".


Good stuff guys.  Keep it coming...


M@

Colorado's extra coil is wounded on the same axis as with the secondary. Probably the loosening connection coil is in between them. Loosening connection coil might doesn't needed when as you said the coils are 90 degrees between each other.

Good Observation Void. Vasmus might use the same trick. The thin wire from vertical coil looks like it's driving the horizontal one which in turn is in a very close proximity with the receiver..

Regardless whether they are coupled electrically or magnetically, their frequency response will depend on the amount of coupling.  Read this for more on this subject.

Exactly what i was searching for. Thanks

@ a.king21

"It's sad seeing people re-inventing the wheel. So please bookmark this post."

What wheel are you referring to?

.

@ a.king21

"6 This one is for you Hoppy.  All Kapanadze has to do is use a Kacher in the following circuit
and all he would need to receive the transmitted power would be an EARTH GROUND and
a reverse winding as per the Tesla spec.... and so would Akula, Ruslan and any other purveyor of "FREE ENERGY".
THE END.."

What makes you think this?

TESLA!!

TESLA!!

Obviously, as its a drawing by TESLA but where is Kapanadze's TX  and power supply?? Please don't tell me that TESLA did not need a power supply to power the device in that drawing.