Confirmation of OU devices and claims

[gyulasun]

Hi Itsu,

Thanks for the tests. 
I think your TX coil behaves like a vertical antenna with a size little longer in length than a quarter wave antenna but
much less in length than a half wave antenna. It has a voltage maximum at its top side (and minimum at its bottom)
and it has a current maximum in its middle part (and minimum current at its top and bottom). 

For your TX coil, we need to consider that a generator (gate driver IC or function generator) drives the series LC circuit
with a low AC and DC internal impedance and the series LC circuit is closed via this low impedance. And across this low
impedance there is the 10-12 V or so square wave signal, this is also a relatively low level with respect to common
connection point of the capacitor and the coil where the several hundred volt or even kV high voltage levels develop.
This is why the voltage i.e. E field is low at the bottom of your coil and it has a maximum at the other end.

When you hold the small coil or ferrite coil horizontally, we need to consider it has its own magnetic field reception
characteristics,  from its end direction it has a zero response, this is why it shows quasi zero magnetic field in the middle.
But the current in the TX coil creates maximum magnetic field just in the middle part your black tape is.   

Here is a good explanation for the operation of a half wave dipole. https://www.youtube.com/watch?v=7bDyA5t1ldU
Notice it has open ends and this explains voltage maximums at its two ends and it has a current maximum at its center
part where it is usually driven and the current is zero at its ends. (Electrons have to stop at the conductor open ends.) 
The animation nicely shows the 90 degree phase relation between the current and voltage, a resonant antenna is also
an LC circuit of course.
Gyula

[seychelles]

SO ITSU PLEASE USE THREE COILS PUT TWO HORIZONTALS TOP AND BOTTOM AND A VERTICAL COIL ALL IN THE MIDDLE ALL IN SERIES RESONANCE AND SEE WHAT HAPPEN.

[itsu]

Hi Itsu,

Thanks for the tests. 
I think your TX coil behaves like a vertical antenna with a size little longer in length than a quarter wave antenna but
much less in length than a half wave antenna. It has a voltage maximum at its top side (and minimum at its bottom)
and it has a current maximum in its middle part (and minimum current at its top and bottom). 

For your TX coil, we need to consider that a generator (gate driver IC or function generator) drives the series LC circuit
with a low AC and DC internal impedance and the series LC circuit is closed via this low impedance. And across this low
impedance there is the 10-12 V or so square wave signal, this is also a relatively low level with respect to common
connection point of the capacitor and the coil where the several hundred volt or even kV high voltage levels develop.
This is why the voltage i.e. E field is low at the bottom of your coil and it has a maximum at the other end.

When you hold the small coil or ferrite coil horizontally, we need to consider it has its own magnetic field reception
characteristics,  from its end direction it has a zero response, this is why it shows quasi zero magnetic field in the middle.
But the current in the TX coil creates maximum magnetic field just in the middle part your black tape is.   

Here is a good explanation for the operation of a half wave dipole. https://www.youtube.com/watch?v=7bDyA5t1ldU
Notice it has open ends and this explains voltage maximums at its two ends and it has a current maximum at its center
part where it is usually driven and the current is zero at its ends. (Electrons have to stop at the conductor open ends.) 
The animation nicely shows the 90 degree phase relation between the current and voltage, a resonant antenna is also
an LC circuit of course.
Gyula

Gyula,

thanks for the comments and the link, nice tutorial on antenna's.

But i am not sure if it fits the big coil setup i have here, at least some things measured do not add up.

I know the voltage across the LC is at maximum inbetween the L and C, as that i can measure with the VU meter,
but if there is a maximum current i do not see it.
Measuring with the current probe shows the same signals above the coil, inbetween the coil and cap and below
the Cap, see screenshot.

I cannot measure inside the coil or cap, so i still need some gauss meter capable for 193Kz i guess to check on that.

Itsu

[itsu]

SO ITSU PLEASE USE THREE COILS PUT TWO HORIZONTALS TOP AND BOTTOM AND A VERTICAL COIL ALL IN THE MIDDLE ALL IN SERIES RESONANCE AND SEE WHAT HAPPEN.

Seychelles,

please don't shout,  the caps lock key is on the left of your keyboard.

Could you please clarify what you mean, (TWO HORIZONTALS TOP AND BOTTOM?).
I use parallel resonance only, is that OK,  or must it be series resonance?

thnaks,   itsu

[gyulasun]

Hi Itsu,

Yes, the voltage is at maximum inbetween the L and C, on their connection point and let's clarify further that this voltage
maximum is referenced to the common negative of the driver IC, the negative supply rail is at zero voltage. 
In case a grounding wire is connected to this common negative rail, then the zero voltage may change to a certain potential
RF wise, depends also on frequency.  The C capacitor is directly connected to the common negative while the L coil is
connected via the low output impedance of the driver IC or the function generator. 
All I mean here is to clarify between which two points is the L and C voltage maximum in the circuit, ok? With the VU meter probe 
you checked this by starting from the bottom of the TX coil which is connected to the common negative via the output pin of the IC
(or via the output of a function gen) so the bottom coil wire is maximum at 12Vp level above the common negative whenever
the positive half waves of the square wave appears. 

Now about the current: yes, you cannot see the maximum current but I mean current maximum developing in the middle part of the TX coil, 
this was indicated by  the small coil or ferrite rod coil tests. They showed maximum magnetic field strength in the middle part (black tape) of the coil. 
I say from antenna theory:  maximum magnetic field can develop only where there is current maximum developing.

I think you could influence the place for the maximum current by changing the input frequency to the gate driver and retuning
the TX circuit to that new frequency and use again the ferrite coil horizontally whether it will indicate zero in the middle part of
the TX coil, ok? If this zero place shifts below or above the black tape, then it should mean the current maximum developed at another part of the coil. 
If the zero place (as indicated by the ferrite probe coil) stays in the middle, then I am simply wrong
with this current maximum explanation in the coil and in this case it may not work similarly to a quarter wave antenna.
With the change of the frequency (say by 50-80 kHz) the voltage maximum should stay inbetween the L and C I think.
Thanks
Gyula