Quote from: NickZ on October 15, 2014, 10:54:09 AM
All:
Last night I connected up the yoke's output to my grenade coil. It did raise the voltage output to the bulbs, as compared to just running from the yoke core by itself. 

Hi Nick. Too bad you don't have a scope so you can see the output waveform produced
by your ZVS driver. The Mazilli ZVS driver is prone to unstable/unwanted oscillations depending
on exactly how it is connected up to a transformer and load. I have observed that the ZVS driver can
oscillate at other frequencies than expected with various distorted waveforms, and can draw a fair bit
more power than normal than when it is operating normally and producing a clean sinewave. 

Your ZVS driver may possibly be running in such an unstable oscillation mode and thus drawing more
than the usual 3 A to 7 A at 12 VDC, assuming you are running at 12VDC. This can make the FETs
get very hot quite quickly. If you are running at 12 VDC, do you have a meter than can measure
currents up to say 10A? If you are drawing more than 6 A or 7A at 12 VDC from a 12 V battery, then
the ZVS driver may well be running in such an unstable oscillation 'mode'. Do your FETS get hot
when you have nothing connected to the secondary of the yoke core?
All the best...

Quote from: magpwr on October 15, 2014, 09:10:33 AM
If anyone can help me find that old video of Akula which i now know it is actually referring to the subharmonics/harmonics of the frequency which he was trying to show at that time which needs to be aligned.

Hi magpwr. I think maybe you mean this video? This is not the original, but Wesley's translation of it:
https://www.youtube.com/watch?v=PPHipGkfSAY
All the best...

Quote from: Jeg on October 15, 2014, 11:29:07 AM
Nick thanks for the feedback. My setup is the last drawing of ruslan (or bruto's copy) with a tuning cap in parallel with the 28 turns and grenade. When this 28T circuit is tuned gives me a nice 50W full bright just by itself. When i tuned the 3T circuit at the same 27KHz, no full bright any more. I changed polarities, number of turns, and way of winding it, but still the same results. It stops only when i tune this 3T circuit to the high freq. component. Perhaps it was not a good idea to tune the 28T circuit. I'll do some tests more and i will proceed as i already described to see what will happen.

In addition and the most important, when I tuned to 27Khz my 3T circuitry, the 1.7Mhz resonant freq of grenade, just disappeared. On the other hand, when 3T circuitry is un-tuned or tuned to a high freq then 1.7Mhz are still the resonant freq of grenade. I think this is another evidence that something goes wrong on there.

I tried something different tonight by removing the kacher part of my configuration (i have to rewind it anyway as the frequency
of the kacher needs to be higher like 2.3MHz in my case).

Instead of the kacher pulses, i wanted to see if my synced 1KV nano-pulser would have any effect on the 2x 25 turns coil and/or the main grenade coil.

So i wound a piece (~25 turns) of RG316 coax cable (50 Ohm) around this 2x 25 turn coil and terminated it with 50 Ohm resistor (also tried shorting).
I then pulse the coax with my nano pulser to see the effect it has.
The nano pulser was synced with the 74HCxx output and i could adjust the pulse to be right on top of the 27KHz sine wave.
So basically the diagram as attached below and published by Magpwr earlier.

You can see the video here:  https://www.youtube.com/watch?v=Sb0Z-G6fSiE&feature=youtu.be

The effect is minimum, there is a small signal visible ontop of the sine wave, but it does not make any light go brighter or cause any other effect.

Could be that the coax cable needs to be wound inbetween the exposed 2x 48 turns of the main grenade and the 2x 25 turn resonance coil.

There is not much to tune in this setup, probably the only thing is the relationship of resonance between the main grenade coil and the 2x 25 turn (27KHz) coil.

Regards Itsu

Quote from: Enjoykin on October 14, 2014, 09:05:07 PM
Конфа Руслана Кулабухова 
http://rusfolder.com/41984651

Quote from: GeoFusion on October 14, 2014, 12:19:57 AM
https://www.youtube.com/watch?v=fw2yeoovDng

Quote from: itsu on October 14, 2014, 03:24:44 PM
Video here:  https://www.youtube.com/watch?v=9LNsvDhGIVE&feature=youtu.be

I just finished listening teamspeak conference (also available in youtube  - http://www.youtube.com/watch?v=NL55iHTZSw4 ) and see quite differences in GeoFusion and Itsu coils. So I will add corrections from what I heard in recording:
1) We are talking about wavelength = wire length and grenade coil wire length multiplied by 4 = full wavelength and this is your resonant frequency. No LC resonances except in induction heater part between yoke and primary coil for grenade coils!
2) The Grenade coil - It is receiver wound on tube of 50mm diameter with length of ~21cm length, full winding on it for layer forward and continue with second layer to same direction, then divide its length by 2, put the same cable from the end of 2nd layer until middle and wind into opposite direction direction until end then continue with second layer to same direction, then again divide by 2 and put the wire until middle from end of previous coil and wind into opposite again until end (the last half is in same direction as longest bottom) then continue layer on same direction. Then put wire across top coil and put inside of tube then make exiting under begining of coil. The total length of wire = 1/4 of resonant frequency. Also the inductance is minimal (microH range). The ground is also connected to the wire exiting from top of the coil and should be completely separate to avoid any noise as device is really sensitive to it.
3) The Tesla coil - you have to wind with with spacing between windings for getting higher frequency. You should get high voltage as possible to antenna (5kV+? voltage source) Also the wire length of Tesla coil must be tuned to match resonant frequency of grenade coil wire lentgh which is wavelength. When frequency matches with grenade coil the 25W bulb connected directly on grenade coil should start lighting up. You need to get best resonant frequency  of Tesla coil decided by wire length of grenade coil to have maximum effect. Also when you connect ground you have to do additional tuning for getting it again.
4) The antenna - it should have spacing at least by 2 fingers to make coupling between antenna and coils minimum as possible. Also the Tesla coil is your transmitter where energy is accumulated from surrounding and with antenna you will radiate grenade coil to absorb that energy.
5) The inductor coil on grenade coil - it must be half of wavelength and winded to opposite than bottom layer of grenade coil. Also each layer should start from same place and end (Please see how E. Leedskalnin PMH is winded) in middle of grenade coil.
6) About Yoke - the primary coil should be calculated to have 2 volts / 1 turn and is on middle of long secondary winding. The secondary coil for current source into grenade coil goes 1st on core with spacing left for 3 winds coil. The frequency is on up to 1/100th harmonic frequency of grenade coil resonance.
7) The power supply - the big NO from mains! You have to use 7Ah+ batteries for entire tuning so there will be no ground loops.
The capacitors should be high voltage rated and must survive short circuits for continuous use.

The frequency is driven by wire length of grenade coil then you tune katcher for maximum output in grenade coil and then you tune induction heater circuit for harmonics resonance of grenade coil.
This is a way to sum voltage source from Tesla coil with current source from yoke. The frequencies must be tightly matching and any +/- 100khz differences outside of harmonics between Tesla and grenade coils will make system non-functioning.

Hopefully it helps.

P.S.> Itsu - I do not see you on skype anymore and it would be good if you contact me there so the lot of progress would be made in live sessions....