Dr Ronald Stiffler SEC technology

[plengo]

Can any one explain why the 13.6 mhz? Is this magical or just a consequence of the self-resonance of L3?


I am not able to replicate this. Should I buy the crystal?


Fausto.

[NickZ]

   Guys:   Sounds like we are hot on the trail...   The issue at hand is that the crystal oscillator is not strong enough by itself to do much, other than light a single led bulb. Cree or otherwise. So, something has to change there. The second thing is that having to use an expensive, or not so expensive SG, is not something practical for most of us. Therefore, what is the solution???
   I think that we need to build an oscillator, crystal or otherwise, that will do the job. It looks like both the oscillator frequency needs to be exactly the same as the oscillator frequency. Perhaps the 13.5MHz has something special to offer, or maybe not. But, it does look like the Doc has found the magic sweet spot, for his tuned circuits at that frequency. Otherwise, there won't be any "extra juice" available. And much less, something to get really excited about, like OU, or even self running. I think that Doc needs some help there, from those interested. To go beyond lighting an led by capacitance using a SG.
   So, how do we go about tuning a coil to the exact same frequency as the oscillator frequency. And how do we build a strong enough oscillator circuit, that can output over 20v, to provide the needed input of the L3 coil? And also, be controlled to produce the needed 13.5MHz. And can have the needed gain to do more than what we have already seen. That is my question.   

   Gyula, thanks for your help, much appreciated.
As most of us are just simple experimenters, and not RF or electronic specialists.

[Slider2732]

^ what he said

That's what i'm thinking too.

[Lidmotor]

Fausto---  Here is where I got my 2 pin 13.5MHz crystals.  For $2 shipping included you get 10 of them.  The down side is that they come from China.  It took two weeks for mine to arrive in California which wasn't too bad.

https://www.aliexpress.com/item/Free-shipping-10pcs-Authentic-line-of-quartz-crystal-HC-49S-crystal-resonator-20ppm-13-5MHZ-13/32571317213.html

[iQuest]

Good work guys!  This is my first post here so it may be a bit long and be delayed in getting posted due to newbie review requirement.  I would first like to note that I appreciate the
constructive comments that are posted here and the work being shared.  The different paths being explored provide a good learning experience and all are headed in a very interesting
direction.  Thanks guys, really appreciate these efforts which include technical feedback, research, and the parts search that is being done by all.  A special thanks to Dr. Stiffler for
posting more thought provoking videos which provide helpful tips, hints and insights.

Slider:  You will have maximum voltage magnification when the open end of the L3 coil is the antinode (Vmax) of a 1/4 standing wave pattern at the same time that the L3 coil is
resonating at its srf.  I think that in your latest video, where the AV plug LED is brightest at the side of the L3 coil, you are demonstrating a way to find the 1/4 wavelength antinode. 
You should be able to confirm this by shortening the length of the wire of that L3 coil, as you shorten it the brightest AV LED location should move towards the open end of the L3 coil
wire.  And you should be able to make some adjustment to the L3 srf by adjusting the distance between L2 and L3.  Easier said than done, but I think best results will be obtained when
L3 is resonating at its srf while generating a 1/4 standing wave pattern (1/4 wave resonator).  If you go to the following link and set the Red and Blue Wavelength to 20m it will display
a 1/4 wavelength animation.  The Magenta standing wave at the bottom displays the sum of the Red and Blue waves, the right end represents the open end of your L3 coil wire.  If
you set the Red and Blue Wavelength to 15m you will see that the standing wave Vmax moves away from the end, which is what I think you are now showing on your L3 coil.  This
animation simulates two open ends but it was the best adjustable superposition of two transverse waves traveling in opposite directions that I found:  http://ophysics.com/w3.html

Lidmotor:  Good job modifying the crystal testing circuit to achieve that great result of brightly lighting up those LEDs mounted on an aluminum plate.  The tuning of your L3 coil
to the crystal frequency appears to be right on.  When needed, an alternative to ferrite rod tuning would be to connect an aluminum mass to the point where your L3 coil connects to
your crystal circuit output or (+) and adjust the distance between it and the L3 coil.  May need to experiment to find the best place to connect this mass in your circuit but this is a
method used by Dr. Stiffler when he tuned his PSEC.  You obtain better Q-factor and greater efficiency with an air core coil so this method may help obtain better results when you
need to tune the L3 coil, this may also help Slider's L3 srf tuning on his circuit.

TK:  Really like the crystal oscillator with 74AC04 circuit that you built and the scope shots you showed us, also liked your mention of maybe trying to drive a high speed MOSFET driver
and a higher voltage supply for a MOSFET as the final output stage.  Your scope shots and your comments about them are always very instructive and I'm looking forward to the direction
that you may be headed.  Maybe a low power auto-resonating circuit with antenna feedback triggering can be designed for this application, similar to this great working and auto-resonating
TinselKoil X that you demonstrated a year ago:  https://www.youtube.com/watch?v=WV3posVDqJs