Magpwr,

Some remarks concerning those video's:

# you can hardly call that left (~17 turns) flat wire secondary a Tesla coil, no sign of any (underlaying) Tesla coil either, also no
connection to the right "grenade"coil combo.

# Neither this 17 turn "tesla coil" nor its primary is connected.

# The scope shows a 15.3Khz clean sine wave of 8Vpp coming from this red paralleled capacitor (2x 470nF = 940nF?).
Where does it come from / goes too?

# The other red capacitor (laying flat) and also presumable 470nF is connected in series with one of the white leads coming from
the 3 turn coil from the yoke and going to the Grenade coil (2x 25 turn L3?).

So adding more confusion then clearing up    , only the last item seem to fit with what we (i) got.

Regards itsu

hi itsu,

You got me wrong.The Flat is not a tesla coil it is a possible way to inject high voltage nanosecond pulse via tesla coil."I wonder if there is nanosecond surge in kv and combine with existing high/frequency at tesla antenna what would be the scenario like"
The Flat coil seems wound over tesla coil.
You will see to see another video to notice the tesla coil length and thickness which i mentioned previously it is around 20AWG.
I have attached this screen shot "Alternative view " previously to justify on the outer coil windind direction base on that video in one of the frame of the video you should able to see the magnet wire thickness on the yellow tape portion.There should be no confusion.
All video are base on Ruslan.


What i was highlighting do observe to justify the length of the tesla coil itself to be Oscillating at around 1.7Mhz...1.8Mhz.

The 2 video i have link is the unassembled version and a partially completed but partially incomplete unit to power those high watt bulbs.It's the same device.
If you notice the sequence of video upload for this device in date do not match.This is not important but can be confusing for many whom always latest uploaded is the latest stuff.


# The scope shows a 15.3Khz clean sine wave of 8Vpp coming from this red paralleled capacitor (2x 470nF = 940nF?).
Where does it come from / goes too?
Ans:He was various colour wiring from electrical connector.
from 3 turns it is going to capacitor then it became brown wire from connector leading to device.The signal below <18khz and brown wire from white wire from yoke is just a decoy or extended wire.

Important thing to note the waveform obtained from probe which was connected to both leads of 0.47uf x 2 parallel capacitor is a sinewave.

We now clearly know "The 3 turns" it's following the pwm generator signal.
Another thing to note the sinewave vpp is 16volts at 15khz at the 3 turns of the yoke core this is based on 24volts supply which is driving the yoke core.

Please don't be concern ovre 15khz recall Akula mentioned for air core <18khz it don't make sense something like that found in the only pdf which i previously created from the tesla coil tuning video.

--------------------------------------------------------
No confusion please.
Base on the long story i wrote above this is the short version-

1)3 turns of yoke follow pwm generator frequency
2)Signal between 470nf is a sinewave
3)I just mention about the nanopulse possible point at tesla coil with the flat wire
4)I wanted to show you that the winding of your tesla coil is wrong hence i need to justify the length of tesla coil to get 1.7mhz...1.8mhz with all the antenna connecting wire/outer coil over multilayer.


------------------
That's all for today.I need reminder energy for experiment.
 

But as i said,  "no sign of any (underlaying) Tesla coil either", so there is no "tesla coil" anymore!!

I don't think so, see path from white wires, also lateron in the video you can see the left white wire goes to the 2x 25 turn coil.

Regards Itsu

hi itsu,

I have attached my last justification for 20AWG tesla coil for today.Ignore file 2 turns tesla for file name it's for my recall only.

There are people whom are much better than me in "reverse engineering" eg:Ruslan his nanopulser was based on Akula circuit.

yeah, but this picture is not from those 2 last video's you published and there i was commenting on.

Never mind, lets continue.   

Regards Itsu

Itsu can you please measure how many KHz is your yoke's primary oscillation? The one that you consider as parasitic. In my previous yoke arrangement with 12 12 primary was around 600khz. Now with 6 6 turns primary is around 870khz.

Itsu can you please measure how many KHz is your yoke's primary oscillation? The one that you consider as parasitic. In my previous yoke arrangement with 12 12 primary was around 600khz. Now with 6 6 turns primary is around 870khz.

hi Jeg,

not sure what you mean by  "your yoke's primary oscillation".

When i input my SG at the 3 turn secondary, and measure across the free/open ends of the primary (so 12 turns inbetween) with my scope,
i see a nice sine wave develope at 4.6Mhz (input from the SG is square wave).

So to me this means this 2x 6 turns primary self resonates at 4.6MHz with nothing attached to the 28 turn secondary, is that what you want to know?


When i was at it, i measured the inductance of this primary and found that the total inductance across the 2x 6 = 12 turns is 77.9uH
But measuring the both 6 turns individual, i see an unbalans as 1 leg measures 18.6uH, and the other 24.3uH.
Need some adjusting there.

Finally, i measured the 2x25 turn L3 coil which i previously calculated at 80uH, and it measures 87uH.


Regards Itsu

T1000 commented some time back that the nano pulser should pulse the kacher, which strongly suggests to me that the Kacher should be powered from the main supply and stepped up to a high voltage as Mag suggests. However, I don't think the 28 turn yoke winding is providing the power.

Edit: On second thoughts, has Ruslan tried the copper tape wound tightly over the secondary winding in an attempt to increase the voltage level across the secondary through close coupling? If this is the case, then my logic tells me that he is driving the primary from a low voltage, otherwise he would surely suffer arcing between windings.

re: itsu's spikey yoke drive..

other than trying to throw things at the problem to 'fix it' what is causing the problem?
I would think if the drains were shared than it wouldn't have triggered the 50ohm resistors right ...


would a bigger choke fix it?  (if you added a choke to the 12V input to the yoke like a mazilli... )


1) fet A turns on, conducts side A, large electron current change results in inductions on all other coils... including side B... which should be electron current in the opposite direction, so from + to the fet side...which is a large negative at the fet.  Doesn't a fet have a body diode that allows that to conduct?  Would think you should block that flow from the drain entirely with a diode... and maybe a capacitance....


or like what's the drain-gate breakdown?... if you lower the drain below the gate .. does it end up triggering to be 'on' ?


....
And using a square wave, are you sure the pulse should be so very wide?  I approach it from a lowest power standpoint... and if you pulse width was say something like 900kHz, with a overall pulse of 27kHz(something... the low coil's resonance) ...  It could be that there's not enough load to the transform for such a wide pulse of 12V input... that it's like in a clipping/overdrive sort of mode maybe

   Hoppy:
   Got any suggestion for modifying my 12v, 10A battery charger to work at one or two amps? To be able charge my 12v, 7ah battery, properly?  Something simple...