Tesla's Magnifying Transmitter "Replications"

[Kokomoj0]

Hi all, I would like to present some plans I have of building some new coils and
associated equipment. The new coils will be resonant below 200 Khz and capable
of very high voltage.

Specs;

Coil A 300mm diameter 100mm high 0.5 mm wire, 160 meters 200 turns.

Coil B 100mm diameter 300mm high 0.5 mm wire 160 meters 600 turns.

Coil C 320mm diameter 40mm high 5 mm tube 2 to 4 turns tapped 5mm spacing between turns.

This is what the coil will kinda look like.


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Some more info on the estimated values.


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This is what it should be capable of with one turn and 10 000 volts input.
Over 1 000 000 Volts. Click the image to be able to read it.



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Large picture
Imageshack - coilspecsbig1.jpg

This is how I'll power it up.


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This is how I intend to build the adjustable and air blown spark gap.


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I'll blow it like this.


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And I intend to build a special little shed for experimenting in it'll have more
room than the drawing suggests, it'll be bigger.


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And here's a video of an experiment with terminal leakage.
Terminal Leakage.wmv - YouTube

So I will probably deconstruct my low voltage coils for the wire but I'll ht them
with a spark gap before I do that.

Cheers

ok what I do not understand is why you are at least from my knowledge base making this so complicated? at least that is how it looks again based on my knowledge base?

My understanding is that the b coil is a free resonant coil so it seems to me you would tune it much like stifflers methods using a spectrum analyser to start and then building the second as close as possible to it starting with the same wire lengths and mass etc.

then what is wrong with buying an elcheapo 1 amp 15,000 volt neon sign transformer and some 30 kv neon sign wire?

Could get 2 of them and fw rectify it and start with what is fw again 2.14x30kv? The higher the voltage you start out with the lower the coil resistances required to get your desired Vo and the sharper the Q will be at resonance.

stuff:
JavaScript Power Calculator
Inductors
Coil Construction Techniques - HAMwaves.com
RF Inductance Calculator - HAMwaves.com

If that interests you then you could either buy hv transmitter type diodes or just string 50 x 3 kv diodes in a row for each leg. LOL

Then for the air why couldnt it just be a rotary disk that is hollow on one side with holes drilled on the outside rim face to cut the air off from the pipe at whatever speed you dial in on your vari speed motor? then correspond how many holes you have and the motor speed to the freq you wish or do I completely not understand what you are trying to accomplish?

Can get fancy and sample it part way up and put a phase and voltage sensor on it and let it self tune to the resonance.

those 15kv neon xformers will hold a nice 4" arc either ac or dc, or step it down to 7500 or whatever v you are looking for and dont forget the screen cage to work behind.

[Farmhand]

Well for me it's not about being able to buy stuff it's about being able to build
stuff. Wheres the fun in buying neon sign transformers ? When I'm done I can
say I build it all. I already run three transformers together I built myself.
I build nearly all the buildings here, and all the fencing, I maintain all the
machinery. And I do it my way.

In case you didn't notice the wire in the Coil "A" and coil "B" will be exactly the
same amount, length and weight. I don't need to tune it "Like Dr Stiffler either",
The primary just needs to be tuned to the secondary. The secondary and extra
coils will be just fine at whatever frequency they end up at. The primary just
needs to be made resonant at the same frequency as the secondary or made to
make the secondary "resonate" at it's resonant frequency.

How to tune a Tesla coil.
Oscilloscope Tuning a Tesla Coil for Resonance

Tesla coil tuning video.
Tuning A Tesla Coil with an Oscilloscope - YouTube

The tuning is a well known procedure and and is no different from how any
Tesla coil should be tuned. He tunes his primary by taps but it can be done
other ways, the main thing is that it is done. I'll use taps too. There is no
tuning of the secondary coils (except to each other), it is just not necessary
otherwise when dealing with only one coil and if two are made the same only
a small adjustment is needed. Unless there is a specific frequency to obtain
there is no point. The resonant frequency of the secondary just needs to be
determined, so that the primary can be tuned to it.

The blown spark gap is to "quench the gap" same effect as magnetic
quenching, it stops the arc and reduces "shoot through" as well as improve
the effect and keep the spark gap cool.

There's nothing complicated about what I'm doing except explaining it repeatedly.

My HV transformer can work at different frequencies, at the moment i'm using
it at 40 Khz, it works ok considering I just slapped it together, next one will be
better. Try changing the frequency of a NST.

That's the point the next one can't be better if there is no first one, to
improve we must do. It's not imperative that you understand my ways or my
motives. I will not follow someone else's path. I make my own path.

This is not my only project I'm also building a rotating magnetic field AC
motor/Transformer/Generator, and planning a DC electric drive for a quadbike
which will have a regenerative system of my own design.

Basically I do whatever I please because I can. And it's fun.

Lighting LED's is a snap and I am bored with that. This video shows an
unpowered transformer powering a 5 mm LED, It's not even ground connected
if it is it works much better but i wanted to show it with no connection, it
took me a few minutes to set it up. But I want to experiment not light LED's,
of course it's just a receiver like anything else channeling energy from one
place or form to another. Nothing creates energy.

Free Energy Coils In Action.wmv - YouTube

Cheers

P.S I already ordered the 1 Klm of wire, I'll use for the coil "A's" and "B's".

..

[Farmhand]

Here's another video, again I'm using low input so I can get close, so the gap
frequency is low, that's not important for this observation.

What I was actually doing was messing with two Tesla coils with the primaries
in series when I noticed the sphere wobbled when i increased the power.

Anyway I connected them in series by connecting the negative out of the
first primary coil to the positive in the other coil, and both coils of course had
the voltage at the terminal the same polarity at the same time and they were
both the same voltage as each other in relation to the ground but zero volts
between them..

Then I connected the negative out of the first primary coil to the negative
"in" to the other coil and so they produced opposite polarity at the same time
and the voltage of each was the same in relation to the ground but the
voltage between the terminals was twice as much as from each of the
terminals to ground.

I got bitten but I edited out the cursing.

Series connected Tesla Coils. - YouTube

Cheers

[Kokomoj0]

I wasnt aware you wanted to make "everything" from the floor up LOL

So I supppose the first question I should have asked long time ago is; Is your goal to make a magnifying style transmitter as the topic heading suggests or something else? I ask because when I post they are all with that regard.

Ok so instead of suggestions, how about some questions

How do you plan on tuning and loading to 1/4wl or is that not a consideration?

Do you plan to have your dielectric and diamagnetic be maximum and in phase on the dome or is that not a consideration?

With the coil free resonant does it really matter what the input frequency is?

I am certainly not trying to pressure you in any way or another, just that these are points (right or wrong) that I believe should be considered if that is the goal, then again maybe I do not correctly understand your goal.

[Farmhand]

I wasnt aware you wanted to make "everything" from the floor up LOL

So I supppose the first question I should have asked long time ago is; Is your goal to make a magnifying style transmitter as the topic heading suggests or something else? I ask because when I post they are all with that regard.

Ok so instead of suggestions, how about some questions

How do you plan on tuning and loading to 1/4wl or is that not a consideration?

Do you plan to have your dielectric and diamagnetic be maximum and in phase on the dome or is that not a consideration?

With the coil free resonant does it really matter what the input frequency is?

I am certainly not trying to pressure you in any way or another, just that these are points (right or wrong) that I believe should be considered if that is the goal, then again maybe I do not correctly understand your goal.

I already have done it. With the Low voltage setup. It is done there is no
more i can do unless I build one to connect to ground below 30 Khz.

I have explained why it is not possible to transmit over longer distances
through a wire without significant losses.

Other than that I have achieved resonance with the transmitter and receiver,
and have drawn loads from the receiver including filament bulbs, motors fluro's
transformers and cap pulsers to name a few. And I built the circuit to excite
the primary myself.

It's not possible for me to get out of the 1 and 1/2 wave length distance apart.

Get over yourself. What do you plan to do.

Whatever it was you wanted to see, it is not my job to do it for you.

I'm tired of explaining myself to you, build some coils and show me what you
say is true is true. Answer you're own questions. I've explained myself
enough. Except for the connecting to ground and transmitting through the
ground part I have completed well enough the objective for now.

There is a lot of fantasy and falsities concerning this stuff, the patent says
resonance so that the maximum potential is at the terminal and I did that.
It doesn't say anything about dielectric and diamagnetic be maximum and in
phase on the dome, who's stipulation is that ?

No one will successfully transmit significant energy through the ground at over
30 Khz or so as demonstrated by Eric in the video, some noise is not a usable
amount of energy.

The mater of the input frequency is just silly, the only way to excite the
secondary to resonance is with the primary and how the energy is input,
including the frequency.

I didn't read anywhere in the patent from 1914 where it says everything must
be as Eric Dollard will say it should be in 70 or 80 years time. I am unable at
this point to build a coil to work at less than 30 Khz but I haven't stopped
experimenting yet.

My low voltage coils work very well, I'm sorry you can't see that, but I will not
stress about it.

If you are not satisfied with my findings then build some coils and do it
yourself And to be comparable to my results they should be resonant at about
the same frequency around 400 to 600 Khz not 8 mhz and use about the same input power levels or less.

I posted the patent in the first post but nobody seemed to read it completely.

And considering all the arguing I've had to do with several people in this
thread, I don't feel like going out of my way to show any further distance
tests. But I might if I feel like it.

I am building two of these bigger coils for several reasons and I have idea's to
lower the frequency to below 30 Khz in an attempt at actual ground
transmissions.

OR do you think I should make a career out of lighting LED's with small HF
setups using a wire to connect them or wirelessly using AV plugs, like i said
it's easy to light LED's both with one wire and wirelessly, but is it useful.

This thread is polluted with arguments because people don't want to read the
patent, they just want to come along and say stuff. It's unnecessary and
bloats up the thread to the point the practical information is lost.

I see it happen a lot with different threads and it totally ruins them. I have
had the same arguments several times in this thread. The thread is now so full
of argument no one could be bothered to read it.

1. Resonance is used to get maximum potential at the terminal.
2. The terminal contains the energy.
3. The energy is transmitted through the ground.
4. The receiver is identical with the coils roles reversed.
5. Tuning is required.
6. To transmit energy through the ground well the frequency must be below
the 30 or 25 Khz Tesla states in other documents.

Simple why don't you build one.

Cheers

[Kokomoj0]

I already have done it. With the Low voltage setup. It is done there is no
more i can do unless I build one to connect to ground below 30 Khz.

I have explained why it is not possible to transmit over longer distances
through a wire without significant losses.

Other than that I have achieved resonance with the transmitter and receiver,
and have drawn loads from the receiver including filament bulbs, motors fluro's
transformers and cap pulsers to name a few. And I built the circuit to excite
the primary myself.

It's not possible for me to get out of the 1 and 1/2 wave length distance apart.

Get over yourself. What do you plan to do.

Whatever it was you wanted to see, it is not my job to do it for you.

I'm tired of explaining myself to you, build some coils and show me what you
say is true is true. Answer you're own questions. I've explained myself
enough. Except for the connecting to ground and transmitting through the
ground part I have completed well enough the objective for now.

There is a lot of fantasy and falsities concerning this stuff, the patent says
resonance so that the maximum potential is at the terminal and I did that.
It doesn't say anything about dielectric and diamagnetic be maximum and in
phase on the dome, who's stipulation is that ?

No one will successfully transmit significant energy through the ground at over
30 Khz or so as demonstrated by Eric in the video, some noise is not a usable
amount of energy.

The mater of the input frequency is just silly, the only way to excite the
secondary to resonance is with the primary and how the energy is input,
including the frequency.

I didn't read anywhere in the patent from 1914 where it says everything must
be as Eric Dollard will say it should be in 70 or 80 years time. I am unable at
this point to build a coil to work at less than 30 Khz but I haven't stopped
experimenting yet.

My low voltage coils work very well, I'm sorry you can't see that, but I will not
stress about it.

If you are not satisfied with my findings then build some coils and do it
yourself And to be comparable to my results they should be resonant at about
the same frequency around 400 to 600 Khz not 8 mhz and use about the same input power levels or less.

I posted the patent in the first post but nobody seemed to read it completely.

And considering all the arguing I've had to do with several people in this
thread, I don't feel like going out of my way to show any further distance
tests. But I might if I feel like it.

I am building two of these bigger coils for several reasons and I have idea's to
lower the frequency to below 30 Khz in an attempt at actual ground
transmissions.

OR do you think I should make a career out of lighting LED's with small HF
setups using a wire to connect them or wirelessly using AV plugs, like i said
it's easy to light LED's both with one wire and wirelessly, but is it useful.

This thread is polluted with arguments because people don't want to read the
patent, they just want to come along and say stuff. It's unnecessary and
bloats up the thread to the point the practical information is lost.

I see it happen a lot with different threads and it totally ruins them. I have
had the same arguments several times in this thread. The thread is now so full
of argument no one could be bothered to read it.

1. Resonance is used to get maximum potential at the terminal.
2. The terminal contains the energy.
3. The energy is transmitted through the ground.
4. The receiver is identical with the coils roles reversed.
5. Tuning is required.
6. To transmit energy through the ground well the frequency must be below
the 30 or 25 Khz Tesla states in other documents.

Simple why don't you build one.

Cheers

fair enough.

any posts you feel that detract from your thread give me the post numbers and I will be happy to delete them.

regards
j

[dR-Green]

then what is wrong with buying an elcheapo 1 amp 15,000 volt neon sign transformer and some 30 kv neon sign wire?

This is science, damn it!!! I'll be doing the same at some point because I want to know what's what, and be able to run the entire setup in resonance. In other words to understand a lot more about what's going on and be able to work with it better. Also there is some satisfaction and accomplishment in knowing that you made something and there it is working compared to being able to buy it from a shop

What neon sign uses 1 amp at 15kv anyway

what is fw again 2.14x30kv?

RMS x 1.4

those 15kv neon xformers will hold a nice 4" arc either ac or dc

A continuous 4" arc is of no use for these purposes. What we need is a disruptive discharge. You must make and break the arc, to achieve the same basic effect as pulsed DC. A continuous unidirectional current can't perform any transforming action between two wires, and a continuous arc is basically a continuous current flowing through the wire. So you need a discharge into the primary coil then a break, before the cycle is repeated.

[dR-Green]

I must have missed it are you using a different receiver coil for the sub ? Good
work any way and very interesting, I'll check it out again. Keep us posted I know
Slider is interested in RC stuff and that's what got him into this adventure. He
might join in, I hope to find something similar to try. It's all so damn interesting
to mess with it's no wonder it is kinda suppressed.

I could try a RC plane or chopper I have plenty of room. Then the
trick might be to make the Transmitter give off more Hertz waves more like
70/30 Earth current/Hertz waves than 95/5 Earth current/Hertz waves, that
way the dedicated receiver would still work too. 80/20 might do, but sine
wave still.

No, it's much too small to fit a coil in. It's not even supposed to be opened so it might spring a leak and just sink at first launch I'm just using a wire in the water connecting to the FWBR. For the actual application I'm going to spray the outer body with the zinc spray so this will be the one wire contact. I don't know how to "ground" the other AC wire just yet, and I think that's important because it gets a lot more powerful. The only option I can really think of is to put a load of tin foil or something light and metallic inside. I have yet to figure out whether it's mass or surface area or what that makes it a better grounding.

Another option I don't really expect to work is to line the inside of the sub with aluminium tape, so between the outer and inner surfaces form a capacitor of some sort. But this thing is small and fiddly. It's a pile of junk really but it was on sale so I thought why not, it would be cool if it worked A boat would be better because at least that's not all supposed to be waterproof.

R/C MINI SUBMARINE RADIO CONTROL 3 CHANNEL WATERPROOF WITH LED LIGHTS TOY GIFT | eBay

I originally got the RC idea from Slider I think, but I don't imagine choppers or cars would be too successful with my setup at the moment, and I haven't been trying to get huge "wireless" range. A boat seemed much easier and more reliable to start with because the water can make the contact.

Do you have any idea how to vary the balance of Hertzian and longitudinal outputs? Only way I can think of so far is by adjusting the terminal

[dR-Green]

Hi all, I would like to present some plans I have of building some new coils and
associated equipment. The new coils will be resonant below 200 Khz and capable
of very high voltage.

Specs;

Coil A 300mm diameter 100mm high 0.5 mm wire, 160 meters 200 turns.

Coil B 100mm diameter 300mm high 0.5 mm wire 160 meters 600 turns.

Coil C 320mm diameter 40mm high 5 mm tube 2 to 4 turns tapped 5mm spacing between turns.

This looks good

I am unable at
this point to build a coil to work at less than 30 Khz but I haven't stopped
experimenting yet.

Why is that? Size? I might build something based on your plans as well Personally I would maybe prefer to go for a bit thicker wire than 0.5mm, but I don't have any rational reasoning for that yet. It would be very interesting if we had at least one set of identical coils that can transmit through the earth

Have you tried using flat surfaced terminals for the spark gap? I ask because something interesting happens that can't happen with pointed or rounded tips. The whole flat surface area begins to spark when they are exactly parallel, the sound changes from a harsh screech and becomes a softer white noise gas leaking type of sound, and it's when this happens I get the best output and reduced input compared to a single arc. With a rounded tip I imagine the arc will try to extend itself in the same fashion as a Jacob's ladder, even though I know you will be blowing it out.

For an example of the change from single arc to whole surface area...

One Wire Light Bulbs With Mini Tesla Coil - YouTube

In the first 20 seconds I'm reducing the transistor base resistance, and you can hear as more current is pushed through it the spark gap is forced from a single arcing point to multiple arcs. The chirping noise is too little resistance and performance drops, so I pull it back just a bit. Next I adjust the gap distance. It will continue to make the white noise until the gap gets too big and then it's back to the single arc and the buzzing sound you know well, but I don't think there's any of that in the video. Something happens towards the end and the sound goes totally out of sync, but it's back to the screeching at 5:34 because it's a lower input voltage and high resistance. I then decrease the resistance and once the lowest point is reached adjust the spark gap. So this shows the visual and audible output difference based on the spark. Although yes I'm using more current AS the output gets better, but I also know how the whole project has progressed and the fact I'm now getting a much better output for less input than I was before, so it's one of those things

[Kokomoj0]

What neon sign uses 1 amp at 15kv anyway

A continuous 4" arc is of no use for these purposes.

they are used for the neons that go all the way around an icecream shop perimeter.

yeh you would need a good quench

[dR-Green]

I have shown that it is practicable to produce in a resonating circuit as E A B B' D immense electrical activities, measured by tens and even hundreds of thousands of horse-power, and in such a case, if the points of maximum pressure should be shifted below the terminal D, along coil B, a ball of fire might break out and destroy the support F or anything else in the way. For the better appreciation of the nature of this danger it should be stated, that the destructive action may take place with inconceivable violence. This will cease to be surprising when it is borne in mind, that the entire energy accumulated in the excited circuit, instead of requiring, as under normal working conditions, one quarter of the period or more for its transformation from static to kinetic form, may spend itself in an incomparably smaller interval of time, at a rate of many millions of hose power. The accident is apt to occur when, the transmitting circuit being strongly excited, the impressed oscillations upon it are caused, in any manned more or less sudden, to be more rapid than the free oscillations.

Right, now I get it



[edit] Well the image isn't quite accurate, but something like that

Also at 2 mins of this video he basically states that Tesla's MT primary was 52 feet diameter. So that huge ring is the coil? Doesn't look very closely coupled, and there's a load of other stuff inside it, including Tesla.

BBC Horizon 1982 - The Mysterious Mr Tesla - part2 - YouTube

[Farmhand]

[QUOTE]

Originally Posted by Farmhand
Hi all, I would like to present some plans I have of building some new coils and
associated equipment. The new coils will be resonant below 200 Khz and capable
of very high voltage.

Specs;

Coil A 300mm diameter 100mm high 0.5 mm wire, 160 meters 200 turns.

Coil B 100mm diameter 300mm high 0.5 mm wire 160 meters 600 turns.

Coil C 320mm diameter 40mm high 5 mm tube 2 to 4 turns tapped 5mm spacing between turns.

This looks good

I decided there was no harm to keeping the coils the same weight and in
trying to remain unbiased I will weigh the primaries to match the secondary
coil "A" for weight it'll be about 400 to 500 grams, as long as I get a precise
weight on the secondary wire I can try it. It might not be easy to say if
it's better or not but I know it won't be worse. So it's crazy not to see if I
can swing it.

Quote:

I am unable at
this point to build a coil to work at less than 30 Khz but I haven't stopped
experimenting yet.

Why is that? Size? I might build something based on your plans as well Personally I would maybe prefer to go for a bit thicker wire than 0.5mm, but I don't have any rational reasoning for that yet. It would be very interesting if we had at least one set of identical coils that can transmit through the earth

Have you tried using flat surfaced terminals for the spark gap? I ask because something interesting happens that can't happen with pointed or rounded tips. The whole flat surface area begins to spark when they are exactly parallel, the sound changes from a harsh screech and becomes a softer white noise gas leaking type of sound, and it's when this happens I get the best output and reduced input compared to a single arc. With a rounded tip I imagine the arc will try to extend itself in the same fashion as a Jacob's ladder, even though I know you will be blowing it out.

Yeah the size it does seem easy to get just below 200 Khz with a reasonable
amount of wire say 360 meters per "A" + "B" coil but it takes more double that
to get down to near 30 Khz.

I did consider thicker wire but then it would take more.

Kokomo does raise a good point with the NST and lots of people use them, I
won't rule it out as not a possibility for me either.

With the spark gap, Tesla used knobs or spheres because the arc is harder to
establish because of the charge holding ability of the sphere, this kind of self
quenches the gap to a degree, I guess it kinda becomes a capacitive gap with
knobs, that won't happen with washers. I bought some ring Neo magnets with
holes so I can try them on the washers with the middle one south and the
outer ones north, which should create a magnetic field concentrated in the gap
by magnetizing the washers themselves. I can only see what happens. If
nothing else enclosing the gap and blowing it will keep it cool over long
periods, we should be able to adjust the input power and the gap to run the
same frequency with lower power or higher.

I did read about a spark gap made from parallel plates finely adjusted to be
perfectly parallel so the arc could dance around freely. Maybe a good idea.
It would make blowing the arc effective too.

At this point I don't have much more than 2000 v from my HV transformer if
that, it has less wire than i wanted so I'll add more wire later, I also need to
experiment with the primaries to see if I can get closer coupling and maybe
less primary turns. I can't get enough power at HV out of it to fire the gap
fast enough while it's wide enough not to become a stream, without
quenching. If I can fire a wide gap like a gap that produces a 100 mm spark
from the little coils, at 160 Khz into the new bigger coils there will be flames I
think, so I will need a narrower quenched gap.

The opposite wound HV transformers, I am going to mess around with trying
different ways of charging the primary cap first up will be a HV resonant
charging circuit and I might try series inductors on the supply secondary as
well to increase the voltage there a bit I hope.

I might have trouble finding the 100 mm wooden formers for the new coil "B's".
I might need to get some turned down.

Cheers

[Farmhand]

Right, now I get it



[edit] Well the image isn't quite accurate, but something like that

Also at 2 mins of this video he basically states that Tesla's MT primary was 52 feet diameter. So that huge ring is the coil? Doesn't look very closely coupled, and there's a load of other stuff inside it, including Tesla.

BBC Horizon 1982 - The Mysterious Mr Tesla - part2 - YouTube

The huge ring is the Primary coil "C" and the secondary coil "A" is there too closely coupled.
The smaller diameter coil in the center is the extra coil "B". Compare the photo
to the patent drawing, then you'll see it.

The picture is good spot on. Tesla inside was a time lapse photo, he's not that crazy.

[Farmhand]

These are quotes from Nikola Tesla on his work with alternating currents

Here Tesla states he uses 50 horsepower to get 30 horsepower into the
oscillating circuit. That is an efficiency of 60% just for the running of the
transmitter. The transmission efficiency is a different thing and the transfer
could be 100% efficient but the total efficiency would still be 60%.
Transmission efficiency would need to be nearly 200% to make a real gain.
That would not have happened.

Counsel
What was the horsepower activity in the oscillating circuits when you used this machine?
Tesla
Usually something like 50 horsepower, and I would get, I should say, approximately 30 horsepower in the antenna; that is, I would get 30 horsepower in the
oscillating circuit.
Counsel
I understood a little while ago when you made the statement of using several thousand horsepower put into a condenser, you could take out of the condenser
a million horsepower. I wondered if you got the same condition with this machine.
Tesla
Yes; I charged the condenser with 40,000 volts. When it was charged full, I discharged it suddenly, through a short circuit which gave me a very rapid rate of
oscillation. Let us suppose that I had stored in the condenser 10 watts. Then, for such a wave there is a flux of energy of (4 x 104)2, and this is multiplied by
the frequency of 100,000. You see, it may go into thousands or millions of horsepower.

Then there is this, Tesla states the regular method of disruptive discharge he
used to show freakish discharges is not how he operated his transmitters. I
assume this means he used damped wave forms to produce un-damped ones.
Or created AC from DC impulses with resonance not forced AC.

Counsel
What I wanted to get at was, did that depend upon the suddenness of the discharge?
Tesla
Yes. It is merely the electrical analogue of a pile driver or a hammer. You accumulate energy through a long distance and then you deliver it with a tremendous
suddenness. The distance through which the mass moves is small—the pressure immense.
Counsel
Did you find that that was the best condition for transmitting energy without the use of wire?
Tesla
No, I did not use that method when I was transmitting energy. I used it only in the production of those freaks for which I have been called a magician. If I had
used merely undamped waves, I would have been an ordinary electrician like everybody else.

As he kind of states here. This tells he had a small damping factor not fully
damped or fully un-damped.

This coil, which I have subsequently shown in my patents Nos. 645,576 and 649,621, in the form of a spiral, was, as you see, [earlier] in the form of a cone.
The idea was to put the coil, with reference to the primary, in an inductive connection which was not close—we call it now a loose coupling—but free to permit
a great resonant rise. That was the first single step, as I say, toward the evolution of an invention which I have called my "magnifying transmitter." That means,
a circuit connected to ground and to the antenna, of a tremendous electromagnetic momentum and small damping factor, with all the conditions so determined
that an immense accumulation of electrical energy can take place.
It was along this line that I finally arrived at the results described in my article in the Century Magazine of June 1900. [Fig. 43] shows an alternator;

And this tells me he used the low alternations to help minimize the radiations
and get the currents into the earth, this is what he means by design and
choice of wavelength. With 20 Khz minimal radiations, with 200 Khz lots.

This view, by the way, is now confirmed. Note, for instance, the mathematical treatise of Sommerfeld,[*] who shows that my theory is correct, that I was right in
my explanations of the phenomena, and that the profession was completely misled. This is the reason why these followers of mine in high frequency currents
have made a mistake. They wanted to make high frequency alternators of 200,000 cycles with the idea that they would produce electromagnetic waves, 90percent in electromagnetic waves and the rest in current energy. I only used low alternations, and I produced 90 percent in current energy and only 10 percent
in electromagnetic waves, which are wasted, and that is why I got my results. . . .
You see, the apparatus which I have devised was an apparatus enabling one to produce tremendous differences of potential and currents in an antenna
circuit. These requirements must be fulfilled, whether you transmit by currents of conduction, or whether you transmit by electromagnetic waves. You want
high potential currents, you want a great amount of vibratory energy; but you can graduate this vibratory energy. By proper design and choice of wave
lengths, you can arrange it so that you get, for instance, 5 percent in these electromagnetic waves and 95 percent in the current that goes through the earth.
That is what I am doing. Or you can get, as these radio men, 95 percent in the energy of electromagnetic waves and only 5 percent in the energy of the
current. . . . The apparatus is suitable for one or the other method. I am not producing radiation with my system; I am suppressing electromagnetic waves. . . .
In my system, you should free yourself of the idea that there is radiation, that the energy is radiated. It is not radiated; it is conserved. . . .

For a magnifying transmitter working at 20 Khz a spark gap would not be necessary, probably better to use an alternator.

I am of the opinion that I will be able to excite the primary of a 160 Khz
transmitter directly from a HF converter producing a very square wave AC or
DC pulse through series caps or cap and this will result in a perfectly
sinusoidal waveform from the transmitter.

Cheers

[Farmhand]

Also the lower the frequency the easier it is to get more power into the primary.
It's much easier to get a nice square output pulse from a converter at less than
200 Khz. And At 20 Khz it would be very easy to get a lot of energy into the
primary thereby charging the terminal well and ensuring lots of currents goes
into the ground more or less making the spark gap obsolete. Getting a high
enough output voltage from a low enough resistance converter to input to the
primary will be the challenge.

High voltage supply transformers have a large impedance which means they will
not work well at higher frequencies and also require higher input voltages to get
power from them. Which makes heat.

Big advantages to lower frequency. I think.


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