Good day All;

While we're at it, figure I'd add some info. from a VNA (Vector Network Analyzer) manual:

"So at resonance the series LC combination switches from acting like a large capacitor to acting like a small inductor."

take care, peace
lost_bro

Unfortunately i and a lot more don't understand every detail explained.
It is hard to make the relation to the workbench.
But looking at the big picture it makes sence...... it is as you always have very interesting to read.

Is it possible Lost_bro to explain some statements (in general) in simple practical understanding?
Maybe in respect to what we are doing and should be aware of with our setups?
It may lead to practical test i hope?


As you speak about behavior of LC serie combination is there also a connexion in what Tesla showed with the coil capacitor....  the double aluminium foil wrapped wich has also in combination with a spark gap a coil/ capacitor behavour?  Yust a guess.

thanks in advance

Good day Apecore:

I wish I had an easy answer for your question:

"So at resonance the series LC combination switches from acting like a large capacitor to acting like a small inductor."

This statement was posted to show a plausible correlation between the comments Dog-One made regarding a possible M.O. relating Parametric oscillations to the operation of this device.

First off one needs to be familiar with the reactances at play while a coil is driven @ resonance and *near* resonance.

At the Fres (resonant frequency) the inductive reactance Xl and capacitive reactance Xc are equal and opposite. 
This means they cancel out each other and only R is remaining, so the Voltage and Current are in phase (resistive load).
In other words: load impedance equals R (winding resistance) @ resonance

I think the first interesting point is: the load impedance will become very sensitive to any changes in Frequency near the natural Fres of the coil.

This translates to the driver seeing/responding to a load that can be dominated by either of the two reactances:
Inductive Reactance or Capacitive Reactance and their associated phase shifts.

When the driving Frequency is under the natural Fres, the Load presents itself as Capacitive and conversely when driven at a frequency above the natural Fres of the coil the Load presents itself as Inductive. This change between Capacitive and Inductive nature is accompanied by the associated phase shift between Voltage and Amperage. 

So we have one coil which can present itself in either of two ways......... with a variable power factor!

When driving a Tesla coil and large sparks/discharges are wanted, it is desirable to run at *precisely* the Fres. This is because @ Fres, the impedance is at it's lowest (only R exists (winding resistance)- reactances cancel out each other) and the Highest Power throughput occurs (large sparks).

The second interesting point would be: Since the load (coil) can change it's apparent electrical appearance from Inductive to Capacitive nature with associated phase shifts (variable P.F.) by fluctuations in the driving frequency...........

The questions are:

What is the min. delta in Freq. necessary to effect this change / flipping of the inductive/capacitive character of the load?
Can this effect be used to instigate Parametric Oscillations?
And, Can this variable P.F. (power factor) be used to an advantage to beat Lenz's law?

Unfortunately I do not have these answers, in fact I am not sure that this is the actual M.O. for the device.

I just post this here as food for thought.

take care, peace
lost_bro

That depends on the Q of the LCR circuit.  As Q approaches infinity, the "min. delta in Freq." approaches zero.
I don't think so because the presence of an external AC oscillator negates self-oscillations.


Here are three videos for newbies:
http://youtu.be/zO7RZZW0wSQ
http://youtu.be/Mq-PF1vo9QA
http://youtu.be/ozeYaikI11g

Good day Verpies

Quite right, forgot to mention how the 'Q' (quality factor) 0f the coil/system ties into the equation.  Accordingly, like you say: Higher the 'Q', less Delta required for the needed flipping action at the Fres.

"I don't think so because the presence of an external AC oscillator negates self-oscillations."

In relation to your statement above, here is an interesting antidote:

"1. The coil was connected only through the full bridge rectifier with high-speed high- amperage diodes with fast recovery times. Coil is 40m Grenade.

2. It is necessary for your device to work properly use only ½ period from Tesla (Katcher) work. Otherwise the Tesla will take away what she has gave back!!!!

Therefore you should put the high-speed high-amperage diode (or parallel diodes) from the Earth-Grounding to Grenade end (40m). Akula did it on at receiving side.  It's cuts off one half of sine on the reception side.
 
Further important:
The diode on a reception side of the Grenade coil remove ½ half-cycle sine and thus we swing  oscillations without slowing down them by negative period of Tesla. Too many people doesn't know it and continue roll molding. That is why Roman (Akula) has said that grounding consume some power... That's right!! Because it, he zap pulse at  ½ period on reception side which is grounded. It is visible on all his devices! I long guessed why he was applied that method and understood that because is so simple and so easy – just  select properly  HV diodes. As any kind of  interference at such frequencies like in Tesla case will lead direct to not correct operation. In other words to cut off a half-cycle not it will turn out. A Kapa resolved this issue by a spark-gap and rectifiers on LF frequencies. There it is simpler and simpler, but it need more wires.... On the German device, Akula used small diodesl, Tesla ws far away, his cable grounding was long. By the way it is equal to Tesla secondary length!!! You shoudn't forget about grounding.... On this device it is the main thing and without good support (grounding) WILL NOT WORK.  Again you shouldn't forget that in this device dangerus high voltages and high currents  were obtained. As you know, HV moves even in the air. For this reason quality grounding is simple necessary part. Plus correct standing-wave (filed)resonance and most important safety...."


This is translated and paraphrased from an interview with Ruslan.

Apparently Without the Diode(s), the entire functional concept is a No-Go.

This seems simular to half wave rectification..... maybe Uni-polar pulses.

Could this be the key?

take care, peace
lost_bro

Good day Verpies

Quite right, forgot to mention how the 'Q' (quality factor) 0f the coil/system ties into the equation.  Accordingly, like you say: Higher the 'Q', less Delta required for the needed flipping action at the Fres.

In relation to your statement above, here is an interesting antidote:

"1. The coil was connected only through the full bridge rectifier with high-speed high- amperage diodes with fast recovery times. Coil is 40m Grenade.

2. It is necessary for your device to work properly use only ½ period from Tesla (Katcher) work. Otherwise the Tesla will take away what she has gave back!!!!

Therefore you should put the high-speed high-amperage diode (or parallel diodes) from the Earth-Grounding to Grenade end (40m). Akula did it on at receiving side.  It's cuts off one half of sine on the reception side.
 
Further important:
The diode on a reception side of the Grenade coil remove ½ half-cycle sine and thus we swing  oscillations without slowing down them by negative period of Tesla. Too many people doesn't know it and continue roll molding. That is why Roman (Akula) has said that grounding consume some power... That's right!! Because it, he zap pulse at  ½ period on reception side which is grounded. It is visible on all his devices! I long guessed why he was applied that method and understood that because is so simple and so easy – just  select properly  HV diodes. As any kind of  interference at such frequencies like in Tesla case will lead direct to not correct operation. In other words to cut off a half-cycle not it will turn out. A Kapa resolved this issue by a spark-gap and rectifiers on LF frequencies. There it is simpler and simpler, but it need more wires.... On the German device, Akula used small diodesl, Tesla ws far away, his cable grounding was long. By the way it is equal to Tesla secondary length!!! You shoudn't forget about grounding.... On this device it is the main thing and without good support (grounding) WILL NOT WORK.  Again you shouldn't forget that in this device dangerus high voltages and high currents  were obtained. As you know, HV moves even in the air. For this reason quality grounding is simple necessary part. Plus correct standing-wave (filed)resonance and most important safety...."


This is translated and paraphrased from an interview with Ruslan.

Apparently Without the Diode(s), the entire functional concept is a No-Go.

This seems simular to half wave rectification..... maybe Uni-polar pulses.

Could this be the key?

take care, peace
lost_bro

Hi Lost bro

Yes, Finaly......someone is starting to see it
that is part of the key, The negative period (1/2 period wave) is cut off by the HV Ultra fast diodes
You only need the Positive halve from Tesla. You only want to call in Ions ( radiant energy )
and not to remove it but to store it and use it in the flow of the spin.
Ground will provide the negative charges. The Tesla will take away what it has givin if full period is done.
Other part  of this is all the correct tuning of the coils Wavelenght and  Freq match.

https://www.youtube.com/watch?v=1weV296sjHU&t=1s
Many have already seen this one but, there is even Ruslan which commented on my video .
over here I have done this with the diodes removing 1/2 period and is as real as it gets.
But kacher Tesla was not yet perfectly tuned to grenade But, when measured
 it was on the 1/3 of the wave lenght of the grenade's
resonant freq. This is why it works on my bench. the manifestation.
 It's on one of the harmonics of manifestation.
Radio Engineering skills is required here. Period.


I have currently a second setup now with exact measurements of wirelenghts for the travelling waves
Which is now under experimentation and there is super positive results now and complete different behavior
and could really say, it looks like how ruslan has shown it on some of his videos back than.

I will soon enough show some demo's when i'm done.
Exciting times ahead now .

I think there is enough info now and everyone if comprehended well, now do this right,.

Cheerz~

Good day Lost_bro,

Thanks for your explanation,.... i can see now enough light in the darkness to find the door

Also Dog one and Verpies,.... as i said before "Golden team"
You all doing great work on the theoretical approach.


And yes,.... hope to see Geo's "new" video soon.

Greetings

It could if it influences the permittivity or permeability (K&B effect) of the involved materials in the nonlinear range. 
However few nanoseconds would be only a small fraction of the cycle that the Grenade/ Inductor circuit oscillates.

Good evening Verpies

OK, yes in reality Ruslan used a *packet of pulses* generated from the 74HC132 Sinxro (Oleg) circuit.
So you are correct, the *packet of pulses* would last longer than a few nano-seconds.
I think I remember Ruslan stated once that it was actually on the order of micro-seconds.

The Grenade and Inductor are Air Core coils, so the only material to be affected would be the Cu metal in the windings.
Don't know if that counts, unless the HV pulse could travel back to the Yoke core/coil windings through the Grenade windings.

Thanks for the answer.
take care, peace
lost_bro

The Grenade and Inductor are Air Core coils, so the only material to be affected would be the Cu metal in the windings.

...and their insulation.

Don't know if that counts, unless the HV pulse could travel back to the Yoke core/coil windings through the Grenade windings.

Indeed it could.