TopRuslan

[apecore]

For now, just inductor alone.  I'll be quite curious if the
frequency sweeps hit the same points or not.  You'll have
to let us know how you hooked things up to make it work
since the inductor really isn't designed for high frequency
input.  If you can't get any good signal going, don't be
alarmed.

https://www.youtube.com/watch?v=cW1Qn0DQwJM

Next vid
https://youtu.be/V8BcvHVAT5g

Signal connected to inductor coil, probing grenade under 8k2 resistor load
The 2Mhz region is popping up again

[Dog-One]

Next vid
https://youtu.be/V8BcvHVAT5g

Signal connected to inductor coil, probing grenade under 8k2 resistor load
The 2Mhz region is popping up again

Great info apecore!

This gives us some good news and some bad news...

The good news is that we can indeed push a high frequency signal
in through the inductor and the grenade will resonate at the same
frequency as when doing it through the antenna.

The bad news is we have to lower the coupling on the push-pull
transformer.  The reason being, the 2MHz signal can come out
from the inductor the same way it can go in.  So if your Tesla coil
is pushing 2MHz through the antenna into the grenade, that same
signal can come out through the inductor, through the push-pull
transformer and be shunted by the push-pull drivers.  Not what
we want for sure.  The other option is to place a good low-pass
filter between the push-pull transformer and the grenade inductor.
This should stop the high frequency from getting back to the
push-pull driver and being shunted.


Something I want to try just to ensure all the basic electronics
is correct, is to put the grenade coil under simulation with LTspice.
Most likely I wouldn't see any OU artifacts, but at least I would
know if we have done due diligence with matching impedances.

With LTspice being a free resource, I can post the model for
everyone to experiment with.  Hopefully someone will spot the
error of our ways and get us moving in the right direction.

Does anyone have a schematic of the grenade that they would
trust as being accurate or most likely correct?  Something that
shows number of turns, direction of turns, layers, order of layers,
etc?  With that I think I can come pretty close to modelling it in
LTspice.  This will help to determine what factors depend on other
factors.  I don't think I can factor in wire length, so I'll have to
fudge that with inductance and coupling coefficients.  If I can
put this is a form that resembles a transmission line, it could
prove to be a big help.  At the very least, we can visualize what
we are dealing with and what things certainly will not work.

[apecore]

Short reply..

Does it matter the I didnt connected the inductor loop.
Would did not reduce the impact on hf?

Test again with loop connected?

Regarding your propoasl fir LT spice, i would propose to use my configuration for modeling.
Tell me the parameters you want and i deliver.

Great news...

[apecore]

This is my grenade, it resonates at 2.0Mhz.
I will post all needed specs here.

[apecore]

This is my configuration.
I added pp foil between layer 1 and 2 for mor capacitance in order to get the 2.0Mhz region.


Made a mistake in the drawing, grenade is now verified.. has 33.5uH .. and resonates approx at 2.0Mhz
You always have to play with the last layer to get it +/- 5khz

Layer 5 and 6 I messed up

Small vid for frequency verification after rewinding;

https://youtu.be/Tb7aV_GVMDI