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Author Topic: Dr Ronald Stiffler SEC technology  (Read 278767 times)

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #330 on: June 25, 2018, 12:41:22 PM »
Hi Fausto,

I think if you go through some papers by Dr Stiffler, you can get closer to his way of thinking.  Perhaps start with this paper here (8 pages):
http://lust-for-life.org/Lust-For-Life/_Textual/RonaldRStiffler__AnEfficientMethodForDrivingLEDArraysFromASpatialEnergyCoherenceExciter_8pp/RonaldRStiffler__AnEfficientMethodForDrivingLEDArraysFromASpatialEnergyCoherenceExciter_8pp.pdf

and also see these attachments here: https://overunity.com/17249/dr-ronald-stiffler-sec-technology/msg511862/#msg511862

Now why the 13.6 MHz (or perhaps 13.4 to 13.6 MHz) ?

 It comes from the Doc's theory on Spatial Energy Coherence...  and L3 is deliberately designed to have self resonance at that frequency (notice the resonance should be achieved under the loaded condition in a full setup).


Some useful links on his circuits others here may find useful too:  http://www.tuks.nl/Mirror/Dr_Stiffler/SECDrivers.htm.html
http://www.tuks.nl/Mirror/Dr_Stiffler/SECExciter.htm.html

Gyula

mikrovolt

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Re: Dr Ronald Stiffler SEC technology
« Reply #331 on: June 25, 2018, 10:31:52 PM »
I showed several tank circuits so that building is possible either BJT or mosfet big or small for ease of building.
today I will give some values related to matching up impedance with the digital signal generator. More specifically
coils that work with crystals and the AD9850. Not to be confused with building an amplifier stage for boosting SG.
I am giving you a way to make a proto type platform instead of messing directly with digital SG such as 2n2222A
http://telecnatron.com/articles/Variable-Gain-Amplifier-For-AD9850-DDS/index.html

The L3 has an impedance of 849 ohms designated by the letter Z. The L1 new design became the 10uH wound
on the sewing bobbin. Because the SEC exciter operates as a negative resistance exciter it takes advantage of the
reverse region of the IV curve. Also operating includes capacitive coupling taking into effect the open system even
wireless in some cases. 13.6 is not really magic. We identify the series on the spectrum analyzer because the first
harmonic we subtract some and so on. Changing the Ca and Cb values that the doctor calculated for the
SEC negative resistance demonstrates another  workable frequency. This 13.4 helps keep us out of trouble
it works good also. The latest revise documentation for SEC will make much of this clearer for those working with it.
The combination of many things contributes to the performance (not really magic)

I am posting crystal and oscillator tank values. I am posting the calculator links so you can plug in values and the
impedance might become second nature. I think the easiest is working smartley with the hartley. (getting tiny, coils .125 dia )
in this way the crystal circuit will be same impedance as the AD9850  better chance everyone gets the same results
when they match will improve overall project goals. Also working the crystal circuit rather than AD9850 and other SGs
will not get damaged in the process of boosting output.

tank for 13.4 Mhz 117 pF and 1.2 uH z=100 ohm    L= .125 in. dia, 44T #28 .6 in long hope you can plug in these values

These are the on line calculators I used to derive these values:
http://www.pronine.ca/lcf.htm
http://crystalradio.net/professorcoyle/professorcoylecyl.shtml

Quotation from Von Braun:
Can a physicist visualize an electron? The electron is materially inconceivable and yet, it is so perfectly known through its effects
that we use it to illuminate our cities, guide our airlines through the night skies and take the most accurate measurements.
What strange rationale makes some physicists accept the inconceivable electrons as real while refusing to accept the reality of a
Designer on the ground that they cannot conceive Him?
In letter to California State board of Education (14 September 1972)




Slider2732

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Re: Dr Ronald Stiffler SEC technology
« Reply #332 on: June 26, 2018, 05:27:12 AM »
Lots of great links and many thanks to all !

iQuest - Great to see you have posted. Am presently going through yours and uV's advice and hopefully others are getting more familiar with what makes these exciters different to other designs.

uV - A very good amplifier and excellent description of its operation in that link. I've saved the circuit diagram and intend to build it by the time the replacement AD9850 arrives. Have to find a JFET for one thing.
As you say though, driving possibly overloading experimental apparatus is best done with the crystal circuit. My derivation 3 coil exciter will be continued with because of those thoughts...its MPSA18 can blow up and not take a couple of minutes to replace...not the same with the AD9850 and especially not this one as it's on its way from China ! The original order was pricier because it was a fast Amazon delivery.


erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #333 on: June 26, 2018, 09:23:21 AM »
Hi all. today the parts received. I build the 13.56 mhz circuit but it cannot be working ! the transistor is MPSA18. is problem from coil ? the coil is from tesla musical module


Ed morbus

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Re: Dr Ronald Stiffler SEC technology
« Reply #334 on: June 26, 2018, 09:28:59 AM »
How much volts do you use
where is the 1000 uH coil
and for what you use 1 K ohm resistor

erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #335 on: June 26, 2018, 09:59:08 AM »
How much volts do you use
where is the 1000 uH coil
and for what you use 1 K ohm resistor
I use 12 volt. below schematic use 1 kohm resistor


Ed morbus

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Re: Dr Ronald Stiffler SEC technology
« Reply #336 on: June 26, 2018, 11:17:20 AM »
Watch Lidmotor on youtube lidmotor use 1000 uH to make it working

AlienGrey

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Re: Dr Ronald Stiffler SEC technology
« Reply #337 on: June 26, 2018, 11:21:45 AM »
Erfandi

Hi looking at your coil i must say it looks like a low frequency Tesla coil, you mention it is from an audible Tesla application.
I think the reason you might be getting nothing is because the coils natural frequency is cutting off in the audio range,
if you used a SG and a scope you would be able to see this phenomena on the scope screen, can I suggest you re wind it
as per L3 characteristics.

Hope this helps.

AG

erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #338 on: June 26, 2018, 11:43:59 AM »
Erfandi

Hi looking at your coil i must say it looks like a low frequency Tesla coil, you mention it is from an audible Tesla application.
I think the reason you might be getting nothing is because the coils natural frequency is cutting off in the audio range,
if you used a SG and a scope you would be able to see this phenomena on the scope screen, can I suggest you re wind it
as per L3 characteristics.

Hope this helps.

AG
thanks for reply. ok I want to make my own L3 coil how many turn is good ? 80 ?
thanks

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #339 on: June 26, 2018, 11:46:28 AM »
Hi erfandl

Please remove the crystal, connect the 12V supply and measure DC voltage with a voltmeter
between negative supply and transistor base and
between negative supply and transistor collector.

Then plug in the crystal and check again the above voltages. Also, switch voltmeter to AC mode
and check the above voltages whether it indicates anything. If it displays total zero in AC mode, then
the crystal may be faulty.  Of course an oscilloscope set to DC coupled input would be the best to check
the voltages, if you have one.
With the DC voltages you find we can decide more.

Yes, the coil may have a much different self resonant frequency than 13.56 MHz and by the look of the coil it may have a self resonant frequency already below 13.56 MHz.  But this must come later, first thing is to check theoscillator works or not.   The use of a choke coil in the collector instead of 1 kOhm may also help crystal oscillation  if the crystal is not that active.

Gyula

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #340 on: June 26, 2018, 12:55:31 PM »
Hi erfandl,

Regarding the coil, you could make some taps on your coil as I sketched in the photo below.

Perhaps you could cut the wire at BC, DE, FG and HI winding places (I know it is not easy) and separate the ends so that windings A to B,  C to D,  E to F,  G to H and I to J would remain next to each other with say a single turn gap between each. 

With such taps, when all the wire ends are floating in the air, you could test several coils individually or combining the adjacent windings in series connection to find the 13.56 MHz resonance or near to it.

Obviously, for a continuously variable coil, a wiper (like in a variable potmeter) sliding on the top surface of the total winding coil length-wise and connecting to the scrapped winding surface would be the best and you can approximate this with the taps.

If your chosen coil section, say, has a higher self resonance frequency than 13.56 MHz, then a small piece of ferrite rod could be inserted to fine tune the coil and get more info.  Unfortunately, the moment you connect the LEDs or an AV plug or anything as a load to the end of the coil,  then these surely detune the coil towards a lower resonant frequency due to the capacitive loading.  The presence of the unused windings next to the used ones may also detune the used coil but this is but a small detuning effect.


If you use a choke coil instead of the 1 kOhm in the collector, you can use any coil which has at least 47 uH inductance or higher.  A 47 uH coil has about 4 kOhm inductive reactance at 13.56 MHz.
Gyula

AlienGrey

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Re: Dr Ronald Stiffler SEC technology
« Reply #341 on: June 26, 2018, 02:48:40 PM »
Guyula

Hi yes 47uh works fine for me, 47uh is a lot of turns on a air core I used some tube from a hardware store 12mm dia with 12mm of 28 swg
and a ferrite rod inside to tune it, from an old wall clock 'radio clock'. works a treat.

Re synth I used some CD4522 down counters (3) from a CD4046 that way i can dial in 432khz or any rep of it up to 1mhz, to get 1khz a CD4060 and a 4,096 xtal, next time I will try a CD4059 (SMD  :D).

AG

erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #342 on: June 26, 2018, 03:34:09 PM »
thanks all for helping. I did not find the 1000 uh inductor from local stores. is any repalcement for this ?

gyulasun - do you mean using 1kohm resistor with 47 uh inductor as coil ?

thanks

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #343 on: June 26, 2018, 04:00:29 PM »
Hi erfandl,
I mean use 47 uH choke coil instead of the 1 kOhm collector resistor (or instead of 1000 uH choke).   You can even make such choke by winding at least 40-50 turns of enameled wire into a toroidal core or ferrite bead, found in discarded PC power supplies or in PC monitors mains supply etc
Have you checked the DC voltages?
Gyula

erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #344 on: June 26, 2018, 04:39:33 PM »
Hi erfandl,
I mean use 47 uH choke coil instead of the 1 kOhm collector resistor (or instead of 1000 uH choke).   You can even make such choke by winding at least 40-50 turns of enameled wire into a toroidal core or ferrite bead, found in discarded PC power supplies or in PC monitors mains supply etc
Have you checked the DC voltages?
Gyula
thanks for reply. OK I understand. I checked the voltage the base voltage is 0.675 volt and collector voltage is 2.352
and a question I have a 1000 uh choke like below picture can I use that ?