hi Hoppy,

Thanks for reporting this latest findings of valuable interest.Hopefully we can see a short video soon to watch the bulb pulsing.

"This is good news for me in the morning"

Hi Mag,

it is a very short couple of flashes after power disconnection but hopefully, this might be an indicator that I'm getting close. There is a very narrow window where the position of the ferrite will cause the pulsing. The pulsing frequency can also be controlled by very small alterations to the inductor cap around the resonance point. With regards to doing a video, I will need to get my son to assist me with the making of a video when he has some spare time.

Hi Menof how are you doing

Now I good.

You mean that either cw or ccw it outputs the same particle sign?

I think, yes.

Ok,  now i see what you mean,  in the below picture taken from this Ruslan Video https://www.youtube.com/watch?v=C8RcRlzk16w,
it can be seen that the SECOND trace show without the Kacher activated, the current (spiky signal) through the 3 turn secondary/bifilar coil is trailing 90°
the sine wave which is the voltage from the Grenade before the FWBR and Cap.
A trailing current means no resonance (as confirmed by the low voltages seen) and at the inductive side of the resonance.

While in the FIRST trace we see suddenly when the Kacher is activated, the voltage now 180° out of phase with the current spikes.

I tried the same (ungrounded), but even when detuning out of resonance, the current spikes and the voltage stay more or less in the same phase relation with or
without the Kacher.

(it could be that one of the probes was reversed (on the current transformer f.i.), which means that with the kacher activated (first trace)
the voltage and current ARE in phase, and without the Kacher active (second trace) the current is LEADING 90° the voltage, meaning
out of resonance at the capacitive side!!) 

Regards Itsu

Itsu, in Ruslan phase shift is 90 degree without kacher. Why you can not get that 90 degree without kacher?

Good morning,

I think some of you might find this video clip interesting- mainly Russian speaking people.

https://www.youtube.com/watch?v=KP6HMQneNDU

He speaks about resonant transformer- which our TV yoke is.

He shows what happens with the phase shift when he change voltage, frequency or distance between coils.   
After, he shows across the resistor what happens with the shift of currents when he change the voltage, frequency or distance.

I know the ferrite is a bit different story. But let me still remind you what Ruslan said: there must be a gap between the 3 turns and the rest of wires , otherwise it doesn't work. Time to sit to my bench after work.

Cheers

Here one megaherc per division?

Yes, again 1MHz / div.

Regards Itsu

Hi MenofFather, 

well, in resonance the phase between current and voltage is normally 0 degrees in one coil.
As i tune for resonance, it seems normal to me that i get 0 degrees phase shift.
However, i (and Ruslan??) are probing the current in the inductor and the voltage over the Grenade, so 2 different (coupled) coils

Why Ruslan gets 90 degrees phase shift, i do not know, but i notice his signals in the trace screenshot is very
low like 5 / 10V pp which points to no resonance (i get 500 / 750V pp in resonance)

But when i detune to no resonance, my current signal (moustache) deforms and is no longer this spiky signal but shifts
some degrees out of phase (no 90 degrees though).

Regards Itsu

Itsu, you try put curent transformer betwen capasitor and one end of inductor cable? Maybe then you get phashe shift 90 degree like Ruslan? Or maybe oscilioscope have option (function) move one chanel signal realeatively other to one side or other side?

Did you mean, that lamp shining brighter on 1.316 Mhz and then you ajust kacher to little lower or upper frenquency, then lamp shine more dimmly?

Meno & all,

Further observation has shown that its not the changing frequency of the Kacher that's causing the pulsing. It appeared this way because I was drawing the ferrite rods in and out of the tube inside the Kacher coil. However, I found today that the its the effect the ferrite rods are having on the grenade coil when the inductor is very close to resonance. I can cap tune the inductor to start the lamp slowly pulsing and then when the ferrite rods are moved towards either end of the grenade, the pulsing will increase in frequency until the lamp stops pulsing and steadies in brightness. Its clearly an interaction between the grenade and inductor coils. I'm not sure that this is particularly significant, as it is likely to be the beat frequency between the two coils as they interact. However, because it looks so like the pulsing lamps I've seen in the self-running videos, it just might be that getting a beat frequency is very significant.

Meno & all,

Further observation has shown that its not the changing frequency of the Kacher that's causing the pulsing. It appeared this way because I was drawing the ferrite rods in and out of the tube inside the Kacher coil. However, I found today that the its the effect the ferrite rods are having on the grenade coil when the inductor is very close to resonance. I can cap tune the inductor to start the lamp slowly pulsing and then when the ferrite rods are moved towards either end of the grenade, the pulsing will increase in frequency until the lamp stops pulsing and steadies in brightness. Its clearly an interaction between the grenade and inductor coils. I'm not sure that this is particularly significant, as it is likely to be the beat frequency between the two coils as they interact. However, because it looks so like the pulsing lamps I've seen in the self-running videos, it just might be that getting a beat frequency is very significant.

Hi Hoppy !
Do you see same pulsing effect when kacher is off ?
Is your pulsing light correlated with ferrite bar moving near by ?
Is your load lamp 20W at 12V or 220V (110V) rated?
Sorry for excessive curiosity !

Maximum power transfer from inductor to grenade coil is when inductor-capacitor-3T assembly is driven by push-pull at exactly resonant frequency. If you play with your ferrite bar near inductor, you change its inductance, therefore resonant frequency of series  inductor-capacitor-3T assembly not match anymore to push-pull frequency set previously, unless your push-pull is adaptive, case when you will not see that pulsation, just steady bright of light bulb.

Edit:
And further more, when you put ferrite bar inside the grenade, you increase coupling factor between inductor and grenade coil.