Color's Kapanadze forum, FE builds circuits and comments

[color]

이것을 먹었더니 흰머리가 검어지고 죽어가는 뇌세포가 살아났다
https://www.youtube.com/watch?v=L31S7eLotWo

이느마는 다 만병통치약쟁이야.
유튜브 함 절단나봐야 정신차릴라나.
이쯤해줘야 역대 선관위 쪼물닥거린 우파랑 윤설렬이 투표조작할 맴이 안생기것냐.

https://www.ilbe.com/view/11379085022

증멜??

[color]

 
It would be good to know how much RF energy is absorbed/reflected-back by the circuit attached below at various frequencies.

To observe that, you could connect your VNA in lieu of that secondary winding to get a direct S11 response, but that would not work well unless the VNA was completely floating.
This is because any grounding of the VNA would short out that parallel LC tank, which is grounded on the schematic.

You could also connect the VNA to the primary winding in lieu of the push-pull driver and make an S11 measurement all the way up to the frequencies suggested by the length of the antenna, but such measurement will be encumbered by the transfer characteristics of the ferrite and its windings.

If you make this measurement, vary the gaps between the ferrite halves to alter the coupling coefficient of the yoke transformer so the LC tank and the antenna are not tightly coupled to the primary winding ...and loaded by it.
In my opinion such loose coupling is absolutely necessary to obtain high Q oscillations in the LC tank and the antenna as described by the author of this paper.

If you see two frequency extrema on the S11 or VSWR display (one determined by the length of the antenna and the second determined by the resonance of the LC tank) then you might want to alter one or the other to make them coincide.

P.S.
You could also make that second measurement with your SA and the VSWR bridge just as if you were matching an antenna to the frequency of a transmitter.
https://www.overunityresearch.com/index.php?PHPSESSID=7v83u0ao3qjdu3ehak895bp3v6&topic=4204.msg96139#msg96139


 

There are no special devices in the transformer.
You, like Wesley, have a demagoguery temperament.
Do not damage the yoke-ferrite.

[partzman]

[snip copy from OUR forum]

There are no special devices in the transformer.
You, like Wesley, have a demagoguery temperament.
Do not damage the yoke-ferrite.

Oh is that right?  And your scientific proof to support this statement?

Pm

[color]

 
partzman :

yoke Primary and secondary coils and inductor coils have no deformation whatsoever.
Take a closer look at the schematic to see what members are missing.
Even if you look at the past 10 years or more, most of the members do not understand, so I do not expect much.

[partzman]

partzman :

yoke Primary and secondary coils and inductor coils have no deformation whatsoever.

I really do not understand what you mean here?

Take a closer look at the schematic to see what members are missing.

I see no push-pull yoke circuit in the schematic so what is missing?

Even if you look at the past 10 years or more, most of the members do not understand, so I do not expect much.

Color,

Why not just tell the membership here what most of them are missing?  Why the mystery?

You do realize that the grenade is a complex asymmetrical transmission line that would obviously have unique characteristics.  How can you discount it as having any function in the gain of the device?  Or, perhaps you would like to tell us all what the exact gain mechanism is?

Regards,
Pm