Kapanadze Cousin - DALLY FREE ENERGY

[lost_bro]

HI lost_bro. Were you driving the grenade coil with just one waveform,
or with two waveforms? One driving waveform to the 'inductor' winding (primary winding)
and another waveform to the 'antenna' winding, or what exactly? Anyway, you can see the combining
of two different waveforms in your time domain scope screen shots, so I would make a guess
that the two different lissajous patterns are due to the two different waveforms at two
different frequencies on the grenade, whatever their origin might be.

....................

Good day Void

Very astute observation concerning the necessity of 2 *different* waveforms being required to produce 2 independant Lissajous patterns (circles).

Yes, agreed...... *two* separate _waveforms_  (signals) are needed to generate *two* distinct Lissajous patterns, and I would assume also a 4 channel DSO to process the dual waveforms.

But........... In this case I am pulsing ONLY the inductor with a single sinewave signal from my Function Generator.

There is ONLY one input signal and I am using ONLY one pair of scope probes on a 2 channel DSO.
So there should ONLY appear ONE lissajous pattern.

And you are right on the money regarding being to see the *modulation* of the Original signal in the time domain.
From what I can tell, this *effect* is caused by the grenade itself, ie; I am not injecting 2 different signal to cause this modulation effect.
When the ground line is removed from the grenade, the *mystery_2nd_circle* disappears............

take care, peace
lost_bro

[Void]

Hi lost_bro. I have seen the exact same sort of thing in my own testing sometimes (extra HF waveform showing up),
as I mentioned in my previous reply. I found the extra high frequency waveform was due to a local AM broadcast
station. Connecting a coil to an earth ground wire makes a very decent antenna for AM broadcast band or SW broadcast
stations, so that is a possible source to consider for the extra HF signal seen in your time domain scope shots.
I can't say whether that is the cause in your case here, but I think it is at least a possible cause, so I think worth considering. 
All the best...

[stivep]

https://www.youtube.com/watch?v=NJpvcL43h-0

Wesley

[AlienGrey]

Good day Void

Very astute observation concerning the necessity of 2 *different* waveforms being required to produce 2 independant Lissajous patterns (circles).

Yes, agreed...... *two* separate _waveforms_  (signals) are needed to generate *two* distinct Lissajous patterns, and I would assume also a 4 channel DSO to process the dual waveforms.

But........... In this case I am pulsing ONLY the inductor with a single sinewave signal from my Function Generator.

There is ONLY one input signal and I am using ONLY one pair of scope probes on a 2 channel DSO.
So there should ONLY appear ONE lissajous pattern.

And you are right on the money regarding being to see the *modulation* of the Original signal in the time domain.
From what I can tell, this *effect* is caused by the grenade itself, ie; I am not injecting 2 different signal to cause this modulation effect.
When the ground line is removed from the grenade, the *mystery_2nd_circle* disappears............

take care, peace
lost_bro

Lost-bros and others, yes now you mention it the infamous circle or out of shape one, from what I can remember that sine wave oscillator has to be the same frequency but out of phase the shape is dependant on 'C' and  'R' altering the phase characteristic similar to a standing wave or classic Huntertron component tester of the 80s - 90s  many government MOD establishments used. However, yours do look modulated, can you draw any power from them

Allen

[NickZ]

   Hoppy:
   Although I'm still waiting to get the needed snubber resistors, I thought to show what the "Chaotic Mode" looks like.
This image below is showing a partial avalanche, (as the peaks can get to over 350v), which would not take too long to kill the fets.
The partial avalanche is shown on the yellow trace, channel 1, and it can get much worse than that.
   I was trying to get the chaotic mode to show up on both working channels, but it usually likes one or the other channel, however, it will also show itself on both channels at the same time. It's just harder to get a shot of that. Any way, the highest peaks at avalanche are at 350v. But, I'm trying to work with it, instead of just letting do what it wants.
   There's a lot to learn about how to best adjust and control these devices to give the best output, yet not self destroy themselves from a runaway condition. But we need more cooperation between the member here to crack this nut.

   EDIT: The scope will not show the correct duty cycle or frequency when in the chaotic mode. And they will vary wildly all over.
   Two questions: Perhaps Void can answer.
    1) How to get the duty cycle to read normally, as it always tend to read about 10% of where it's really at?
    2) How to get the scope readings to not go back and forth, nor walking around the screen, and get them to stay steady? instead.