Dr Ronald Stiffler SEC technology

[gyulasun]

Hi Itsu,

Very good, many thanks for everything.

I suspect the toroidal core starts saturating from the DC component of the collector current.  When you have time please measure the input current taken from the 12V battery.
Core saturation can cause the sine wave distortion we see across the tank (the yellow waveforms). And if you measure the variable capacitor pF value after it is set to the best tuned position, you may find it higher than what would be needed for tuning a 8.2 uH coil to 13.5 MHz, this would be a sure indication of certain core saturation which involves a less than 8.2 uH.

Trying to reduce core saturation, would you make the tap at the 3rd and / or at the 2nd turns instead of the present 4th? I know this may sound strange but I think it would be worth testing. This reduces the Amperturns for the core from the collector current point of view but also reduces the AC impedance for the collector, on which the transistor can amplify.  But the increased step-up transformation in the coil may partially compensate for that.   Try to set similar input current by the 100 kOHm trimmer pot when using the 3rd or 2nd tap, should it change but of course you can set it also for the highest output (maybe with some distortion returning...).

The spectrum of the waveform that drives L3 has many harmonics due to the suspected core saturation,  so energy is distributed rather than confined to the base frequency (13.5 MHz).
Okay on detuning the variable cap and the 40 MHz returns, we need not bother about it,  the loaded and detuned tank will have higher impedance for the collector nearer to 40 MHz than around 13.5 MHz, that is all. 

Two question if I may: Did you remove the capacitor from between the base and emitter?  Is the 22 pF or some other value is still needed between the collector and emitter for the oscillator to work?  (Switch the supply voltage on and of when the 22pF is changed or removed.)

Gyula

[AlienGrey]

Hi Slider,
I am afraid it would take many, many hours to develop a device that would convert or sniff energy from Schumann resonance if it is possible...     But then you would not need to tear your hair out due to the fluctuating frequencies because then (once you know the how to) you could surely build several such devices for the changing frequencies or even to track them... so you should not be left without OU. 
Gyula

Schumann resonance is like pulling the bath plug, How else would you guess the rotation of the earth or the hemisphere we live on ? Whats that got to do with it, my question to you is have you got a Tesla coil, find it's beat with you know what!
AG

[itsu]

Gyula,

i won't have much time today to play around, but will have later this weekend.

Ok, on the saturation of the toroid, but its not 8.2 uH anymore, as that was with it having 26 turns.
Now with 18 turns it has 4.4 uH if i remember right, i will check that again.


I did forgot to put in the 22pF cap when swapping transistors and remember it did not start oscillating,
but i will recheck that again too.

Itsu

[gyulasun]

Hi Itsu,

Yesterday I forgot the reduction in the number of turns from 26 to 18, sorry.  So now the coil may have any value between 4 to 4.4 uH, of course and this involves variable capacitor values of about 31 pF to 35 pF when the core is not starting to saturate.   
No need for any hurry of course.
Thanks,  Gyula

[gyulasun]

Schumann resonance is like pulling the bath plug, How else would you guess the rotation of the earth or the hemisphere we live on ? Whats that got to do with it, my question to you is have you got a Tesla coil, find it's beat with you know what!
AG

Hi AG,
Now I do not have a Tesla coil.  Years ago I wound a few air core single layer coils with different OD and lengths and had a grid dip meter available for checking the self resonant frequencies of those coils.  Back then I was not involved in 'free' energy topic.  If you feel like not speaking in riddles please share some more thoughts of yours on what to look, measure etc when someone is about finding a Tesla coil's beat with you know what...  ok?   

Thanks,  Gyula