Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

Hi Geo,

I may have misunderstood T1000 but I think he was saying to feed the pulses directly into the inductor, not via a capacitor.

[Dog-One]

There are other Vasmus videos on that same youtube channel as well.
http://www.youtube.com/user/DragonsLord76/videos

To me, this one should be telling us what we need to know:
https://www.youtube.com/watch?v=-TDJwOfAm20

We have a Kacher circuit, Impulse @ Peak and clear indication of current through ground wire.

I only wish I better understood the components, the drivers and how everything is connected.


I also find it interesting how Vasmus' device is immune to self destructing when you disconnect
the ground cable.

[Void]

You are right. There is not any noticeable rise at those so low KHz frequencies. It is just that when you hit the right Khz frequency, there will be a rise of higher MHz harmonics which are related to the wavelength. Then you know that you spot the right KHz frequency.

Hi Jeg. Yes, the normal expected results are to see the switching waveform with some ringing on it
at some higher frequency related to the inductor winding or grenade winding, or possibly even some
ringing from hookup wiring as well. The purpose of this test however is to look for a frequency where
something out of the ordinary besides normal ringing due to wire or coil resonances.

Hi Void,
Do you still see same ringing frequency on the wire with current pick-up transformer when shorting out resistor?
Also what frequency is on the ringing wave?
And the second step is to change into sine wave on inductor which would be close what you feed from series LC.

Hi T-1000. Ok, I have conducted some more tests at a higher drive voltage of 12V, and I also tried different
duty cycles through the frequency range of 10 kHz to 40 kHz. Same sort of (normal) results when using a short across
the resistor.

I switched over to a 6.2 ohm carbon composition resistor, as the other 8.2 ohm resistor I tested with yesterday
was a wire wound power resistor, and it could add its own ringing to the waveforms.

(As a side note, I can hear quite loud audible ringing at around 9 kHz, and not as loud at other frequencies
such as 18 kHz, but I am not using any ferrite core anywhere. I can't tell where the audible ringing is
coming from. Maybe it is coming from a ferrite torroid in my signal generator, but not sure. )

The ringing on the grenade output waveform really doesn't change much in my test setup for different frequencies in
the range of 10 kHz to 40 kHz, and for different duty cycles. I was driving the inductor coil with 12 V in this test, to
see if I could see any unusual results when driving at higher power, but still nothing out of the ordinary seen.
With a short across the 6.2 ohm resistor, the output is then of course greatly reduced in amplitude, but the output
waveform is still about the same, with the ringing at about the same frequency of about 5.8 MHz.

See the attached scope screen shots for what the waveforms and ringing looks like.
Power Supply: 12 VDC
Signal generator: 18 kHz, 50% duty cycle
Grenade load: 6.2 ohms, short circuit
Yellow is the Drain waveform.
Blue is the waveform across the grenade output (6.2 ohms or short).

P.S. I had a UF4007 diode in reverse and a 135V varistor across the inductor winding to help limit the switching spike.

[Void]

Hi Guyz 
   Hi Void,
Maybe you could try to find current peak this way. I did it with a simple TL494 circuit and with a Halogen ( 12V car lightbulb)
could be any other incandescent around 7Watts too.
This is the link to my vid on my channel.
https://www.youtube.com/watch?v=SdYGq_jhmeg
Down here I have a diagram to show how it's connected.try it out.
It is for sure between 10khz -40Khz range. But..
Frequency will vary on all different capacitor you use in order to get the current peak.
Tune smoothly while turning the freq pot, sometimes it feels like you bearly moved the pot and you'll reach it.
don't have to mess around with Duty cycle here.
Cheerz~

Hi GeoFusion. As Hoppy already replied, if you use the series capacitor between the yoke secondary and the
inductor winding, for sure there will be a series L-C-L resonance frequency in there. However what we are trying to
do in the test I was trying is to see if there is a frequency in the range of say 10 kHz to 40 kHz when driving the inductor
winding directly with a pulse waveform, where something unsual happens. T-1000 mentioned that you may find a frequency
where you see bursts of current of other unexpected things going on at the grenade output. If you do find such a frequency,
you would then tune your L-C-L resonance frequency to that frequency and then adjust your PWM driver to that L-C-L
resonance frequency.

[GeoFusion]

As Hoppy already replied, if you use the series capacitor between the yoke secondary and the
inductor winding, for sure there will be a series L-C-L resonance frequency in there. However what we are trying to
do in the test I was trying is to see if there is a frequency in the range of say 10 kHz to 40 kHz when driving the inductor
winding directly with a pulse waveform, where something unsual happens. T-1000 mentioned that you may find a frequency
where you see bursts of current of other unexpected things going on at the grenade output. If you do find such a frequency,
you would then tune your L-C-L resonance frequency to that frequency and then adjust your PWM driver to that L-C-L
resonance frequency.

Yes,:) That is how it should be done.
and to my part that is another method to see a Current peak/Burst on output of grenade at the same time using the proper capacitor
To see burst of current manifesting in Grenade without scope.

On T-1000 request,
You should short out the Grenade output without resistor Void. not with a resistor. Try it out,
Just short the two grenade leads together.
as how T-1000 was requesting for you to test and see.
let us know if you still get the same freq at output.
With the ringing  frequency of about 5.8 MHz you could use the circuit for nanosecond pulse freq setup if you see this freq again.
and for yoke you already know it has to be done in Khz range afterwards.

Cheerz~