hi Grumage,

Thanks Grumage.I got a clear picture in my head regarding the 43turns.

May i ask the 20B meant for the 12volts loop back for the inverter is the coil is winded outside the 86turns 2.5mm sq meant for the bulbs.

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At this point let me tell you what i know base on the current information which i throw inside my head.

Everyone,

The 0.75mm sq with dual layer of 43 cw and 43 ccw would have internal resistance which is lower than the 86turns 2.5mm sq for the bulbs.My justification below-

Base on old experiment conducted nearly 2 years ago and by the way this was not taught in our books.

We know that 2 similar value resistor or 2 given winding eg:50 turns connected or winded in series would have resistance doubled as what was taught in the books.

But not many people know that by connecting 2 set of coil example winded 30 clockwise and 30 counter clockwise side by side say on a pvc pipe would have the total resistance equivalent to 1 coil depending on the spacing.

In numbers example 0.9Ohms cw and  0.9 Ohms ccw coil winded  side by side would give total reading as 0.9Ohms instead of 1.8 Ohms.This is measured by a simple multimeter in Ohms setting.
The measurement is the same even if you connect probe +/- either way.

This is what i recall base on experiment done nearly 2 years ago.If anyone don't believe me and take me for a fool do try this simple experiment as describe above which defy logic if you are talking about resistance.


So in another words it would be like 0.75mm sq wire for 43turns is made to look like 3mm sq (0.75x4) estimate with dual cw,ccw layer.This part is just an estimate not to be taken too seriously.


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2cent worth of information-
Do anyone know that the kapanadze winding 48.48.24.24.12.12 have inductance reading of around 158uH and this inductance reading is only half of around 23turns into 4 layers(winded on top) which give around 320uH.
 Ratio 1.98:1

The 90turns used shorter length wire but it's got nearly twice the inductance of around 37.5meter wire used for kapanadze winding.Think about it.

   

This is another design that is similar to the Ruslan device, but it may not provide as much power, The red line is the halfwave pulse from the inverter which goes to the tuned coil, this should be a wavelength of the tank circuit in orange, the purple is the drive signal for the tank which is sync'd to the inverter and is tuned using the capacitor to reduce power consumption.

    Geo:
   Thanks for posting those diagrams.  I knew that you had them still.
   Although the driver schematic looks ok, the other hand drawn diagram was not made by Akula, nor is it correct. Doesn't even show the 28 turns yoke secondary coil. Plus Akula confirmed that the diagram was not correct, as well.

  In any case, I will continue on trying to obtaining a closer replication to how Ruslan has done it in the previous more informative video, and schematics.  At least what I see on the video, matches what I see on the schematic.
 
  I personally would consider building that posted induction circuit driver using the TL494. As it looks simply enough to work.
 
  Geo, can you please post a link to your video of the TL494 driver circuit.  I may have missed it.
  Which of the two different drivers circuits that you have, do you think works the best, so far?

  TK:
   Nice!  I've never seen a HV set up lighting an incandescent bulb quite that bright. Can it light the bulb without visibly blinking?

   Here is a video that I made about three years ago.  It's a "Joule Ringer", just single transistor driver, using no other components.
It was able to light a CFL, and a 60 watt incandescent bulb, both at the same time. 
   I just love simple but efficient circuits. That was a really fun and successful project, and the most useful of any FE devices that I've seen or tried to build, as it can also run off of a small solar panel, for free.
       https://www.youtube.com/watch?v=chEwqvtJUOA

This is a sub miniature grenade coil and driver i made for testing, it has 48 48 24 24 12 12 turns it has a basic self resonance at 16 mhz but driven with a square wave of 394 khz in the 50 turn coil, it's outputs into the larger coil is at  1576khz (250) freq magnification, it's a mixer / modulator. It's not driven by a PA coil at this stage, note the red led is drive and the blue is output, input current is about 45 ma at 16 volts aprox.

TK, your video reminds me a tesla  harpin as Mr angus wangus shows in his video.

Guys, I was caarefully watching last Ruslans video. Must say I believe his device is real.
https://youtu.be/pxuC4QkMKwY

Some important momments:  There is no bi-fillar coil in his device (the grenade coil is history), It looks like grenade but is wound like standard transformer  - NO BIFILAR!
Pay big attention to his hand drawing- All system works on  basic LC resonant principles and synchronisation. No need TV yoke. His next device will have smaller toroid in the box and it will work as fine.

as usually leaves theories beyond understatement how to make
oh, those of his council
further speculation...

  So, does this mean that we should all now change the inductor coil so that it is NOT bifilar wound, and simply back and forth windings?
  If the grenade 168t output coil was previously wound to 37.5 meters this should be changed to 40 meters, instead? Some more turns added? Did a new magic frequency now appear at the wavelength related with 40 meters???

  I never saw any benefit at all from my current 3 turns yoke coil, to 0.47uf tuning cap, and further to the inductor. It was as if it did not exist. I could connect it, or not connect it up, not much change at the output at my bulbs. But, I'm not using the 2000v tuning caps, either, only the 0.47uf, 275v caps, which could be the reason.
 My 168 turns coil is now NOT connected to this grenade inductor coil, which made no difference in my case. Connected or not connected to the 168t coil. I still don't get what that inductor is there for, or what it's supposed to be doing. As the 168t coil is now the main inductor/output coil.  I have a feeling that this 19m inductor, is not really even needed.

  For those interested the first Akula device, here is a video that some of you might like.
  https://www.youtube.com/watch?v=OsORNLGYDnE&feature=youtu.be

  But, what we still don't know is if a push-pull configuration is really needed, or can a regular switching oscillator with the same amount of output power going to a yoke/grenade set up have the same effect. Assuming the yoke primary coil is not set up as center tap.

Hi Hoppy.

Actually he was saying something about possibility to use transformer in connection to have device working at 50-60Hz. Nothing else in details.

His hand sketch shows on the left push-pull. On the right side I think it is pick up coil.  Both synchronised and both grounded as he shows. On the output he draw some filter to not mess up LC tank circuit and the diode bridge.  He says do not ask for schematic. It is very easy to make it if you understand the process.

He step down from granade type because the stability and performance of the device was low.  For Tesla he use the oscillator (not kacher - but can be used if you wish)

That's all in brief.