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Author Topic: Dr Ronald Stiffler SEC technology  (Read 278894 times)

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #810 on: August 10, 2018, 10:08:03 PM »
Hi Itsu,

You did succeed in making things clearer with your kind tests. This setup looks simple, yet needs background knowledge and some useful pieces of measuring instrument to explore it and still there surely remain areas to be explored and understood.

When an L3 coil is driven by an FG at the correct quarter wave frequency, a voltage maximum develops at the top of the coil, this is the basic desirable situation.  Now if a second identical L3 is driven from the top of the first L3, then how the voltage maximum changes on the first and how it can develop on the top of the second L3:  the desirable situation would be that the second L3 could enhance the voltage to a higher level than what is on the top of the first L3. Like a "two stage amplifier" would do it. I am not sure yet whether this can be done, this is why I mentioned for this case the individual checking of the two coils with both ferromagnetic and Alu or copper cores.   
I can be wrong with this, of course.

A sidenote: why the Doc used a resistor to connect the two L3 coils in series, why not directly?  Maybe to reduce current between the two coils hence the loading influence.

Anyway, thanks for your efforts.

Gyula

Gyula,

i did some test using my VU-avramenko meter which shows the presents and relative strength of RF.
It shows that the first L3 coil builds up its RF from base (0) to top (max) pointing to a ¼ wave.
Then the second L3 coil continues the build up RF from the first L3 level at its base to double at its top,
also pointing to a ¼ wave, see video.

The shorting of the 100 Ohm resistor does not change things.

video here:  https://www.youtube.com/watch?v=J8A8l4Sze-w

I also was testing this dual L3 setup using my Spectrum Analyzer with Tracking Generator to see what the frequency
response was (9Khz - 50MHz).
It shows 2 peaks, one at 3.4Mhz, and one at 23mhz.

Not shure how this fits into the picture, but it shows that this setup has some specific frequency responses.
I used the leds minus as the return for the SA/TG, but using the white cliplead (attached to the ledstrip back) far
end shows a similar response.

Itsu

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #811 on: August 10, 2018, 11:28:02 PM »
Okay, what the field strength indicator shows as an ever increasing voltage amplitude up to the top of the 2nd L3 coil seems convincing: you have the quarter wave resonance, when the two coils are not wound continuously into a single continuous winding but a certain separation splits it up into two separate windings. 
I noticed as if the field strength around the 1st L3 coil reduced, when you shorted the 100 Ohm: your VU meter did not show the half scale deflection at the end of the 1st L3, maybe you did not touch the diodes wire to the enamelled (i.e. insulated) coil wire close enough like earlier? But when you continued to the start of the 2nd L3 the half scale deflection returned. You surely checked this more than once that in this respect the resistor has no (visible) role.
You may have checked this also when did the frequency sweep with the tracking generator I suppose, in theory the 100 Ohm may reduce the Q quality factor of the two coils.
By the way, the two peaks are interesting and are rather far from each other, where do they come from, what creates them? If you space the two coils at a higher distance from each other, do these peaks change in frequency? Or you insert a ferrit piece into one of the coils do the peaks change?  Sorry to advise some further tasks for you...    :-[
Thanks for all you are doing.
Gyula

Lidmotor

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Re: Dr Ronald Stiffler SEC technology
« Reply #812 on: August 11, 2018, 12:04:30 AM »
Itsu and Gyula--- This latest setup by Doc is a lot like the experiment I did back in July and posted a video on.  I used two L3 coils that were slightly different.  One was driven by my function generator at 13.6MHz and the other was at the LED panel at the end of a long single wire.  He watches my videos and might have gotten the idea that way.  The resistor was probably put in to measure a voltage drop to get an amperage reading.  The reason I put the second coil in was that it increased the voltage at the LED panel.
https://www.youtube.com/watch?v=WYodoX-lf7w

 What is a mystery to me is how he is going to eliminate the long wire by just using an earth ground.  I'm really looking forward to that.

--Lidmotor

Slider2732

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Re: Dr Ronald Stiffler SEC technology
« Reply #813 on: August 11, 2018, 01:10:08 AM »
Thanks for all the info Brad and Gyula.

Have done some tests this afternoon and, as usual things are abysmal  :-\
I was at 1ft separation and then realised i'd got the power source in my hand. Dropping it extinguished the receiver output.
Am using a 3.7V to 5V converter, out to the variable booster to run at 9V for the moment. MPS6834 seems to do a better job than an MPSA06, because with the other the SEC 18 LED doesn't come on when the L3 is connected to the ground. The MPS6834 will be used until it kills itself with heat, which seems to be another trait of outdoors running. 40mA is the average current draw.
What I seem to find is that tuning to the highest power draw also shows the best receiver output.

12V at 3A is about where things may start working, that's my thinking. Oh and a decent storm. Can't tickle the ground and am sure those worms don't exit laughing !


Update - another observation. I thought my ground was disconnected from the wire up to ground level.
Have got 4x 8ft copper or steel pipes buried in a square for the Dollard radio challenge, so tried another that I never did do properly. It's not far below ground level but was ideal for testing this. It still didn't work.
Corrosion ?
Nope. Connecting the receiver board directly to it, with the SEC 18 clip leaded to the actual pipe and completely nothing  :o
What's the mass of the pipe doing to kill everything ?
Is it a huge difference in frequencies going on ? perhaps the large ground pulls down the resonance of the SEC 18 to 400Hz or something.
Will try a regular AV plug.

Short video explanation and demonstration.
https://youtu.be/8ejFmOG7NLc

« Last Edit: August 11, 2018, 03:10:57 AM by Slider2732 »

tinman

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Re: Dr Ronald Stiffler SEC technology
« Reply #814 on: August 11, 2018, 09:23:19 AM »
Thanks for all the info Brad and Gyula.

Have done some tests this afternoon and, as usual things are abysmal  :-\
I was at 1ft separation and then realised i'd got the power source in my hand. Dropping it extinguished the receiver output.
Am using a 3.7V to 5V converter, out to the variable booster to run at 9V for the moment. MPS6834 seems to do a better job than an MPSA06, because with the other the SEC 18 LED doesn't come on when the L3 is connected to the ground. The MPS6834 will be used until it kills itself with heat, which seems to be another trait of outdoors running. 40mA is the average current draw.
What I seem to find is that tuning to the highest power draw also shows the best receiver output.

12V at 3A is about where things may start working, that's my thinking. Oh and a decent storm. Can't tickle the ground and am sure those worms don't exit laughing !


Update - another observation. I thought my ground was disconnected from the wire up to ground level.
Have got 4x 8ft copper or steel pipes buried in a square for the Dollard radio challenge, so tried another that I never did do properly. It's not far below ground level but was ideal for testing this. It still didn't work.
Corrosion ?
Nope. Connecting the receiver board directly to it, with the SEC 18 clip leaded to the actual pipe and completely nothing  :o
What's the mass of the pipe doing to kill everything ?
Is it a huge difference in frequencies going on ? perhaps the large ground pulls down the resonance of the SEC 18 to 400Hz or something.
Will try a regular AV plug.

Short video explanation and demonstration.
https://youtu.be/8ejFmOG7NLc

Slider

A quick experiment.

Place a cap-say 100uF between the ground wire,and the output on your circuit-negative of cap to ground.
Put a DMM across the cap polarity correct,and switch on the circuit,and see which way the cap charges--see if things are the way they should be  ???

Take note of that grass your circuit is sitting on,and the capacitive coupling between your batteries and grass blades.

Who wants to take a guess at which way the cap will charge  :o


Brad

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #815 on: August 11, 2018, 11:44:16 AM »
Okay, what the field strength indicator shows as an ever increasing voltage amplitude up to the top of the 2nd L3 coil seems convincing: you have the quarter wave resonance, when the two coils are not wound continuously into a single continuous winding but a certain separation splits it up into two separate windings. 
I noticed as if the field strength around the 1st L3 coil reduced, when you shorted the 100 Ohm: your VU meter did not show the half scale deflection at the end of the 1st L3, maybe you did not touch the diodes wire to the enamelled (i.e. insulated) coil wire close enough like earlier? But when you continued to the start of the 2nd L3 the half scale deflection returned. You surely checked this more than once that in this respect the resistor has no (visible) role.
You may have checked this also when did the frequency sweep with the tracking generator I suppose, in theory the 100 Ohm may reduce the Q quality factor of the two coils.
By the way, the two peaks are interesting and are rather far from each other, where do they come from, what creates them? If you space the two coils at a higher distance from each other, do these peaks change in frequency? Or you insert a ferrit piece into one of the coils do the peaks change?  Sorry to advise some further tasks for you...    :-[
Thanks for all you are doing.
Gyula

Gyula,

yes there are numerous variations possible to test for in this small setup, and i am doing a lot but not all reporting
them as that would make even longer boring video's.

My little AVU meter (as verpies called it) is very sensitive for keeping the correct distance to the d.u.t., so it will
fluctuate when not doing so.

The 2 peaks visible on my SA are reasonable "fixed", the high one around 23MHz "moves" the most as to be expected
when spacing etc. the 2 coils.

What i noticed before is that an unloaded L3 coil is (self)resonating? around this 22MHz (on the boundery of my FG
20V amplitude range which is at 20MHz).
The load will pull that down to our 13.6Mhz or so.

I will do some further tests with a single and double L3 only using this SA/TG setup.
Not sure if the Doc is able to go beyond 20Mhz as his shown FG (Wavetek 191?) seems to have that as its upper limit.



lidmotor, thanks for the vid, i had seen it before, now we wil try to reach that distance without any wires.

Slider,  nice outdoor demo, it shows that things are not that simple as expected.  seems the ground is really
absorbing all the RF.

Itsu


itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #817 on: August 11, 2018, 05:25:14 PM »

Hmmmm,  it seems that the last 2 video's from Dr. Stifflers YT account are removed.


Itsu

Lidmotor

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Re: Dr Ronald Stiffler SEC technology
« Reply #818 on: August 11, 2018, 07:59:36 PM »
Itsu and All ---- I think Doc pulled the two videos because he realized that it was going in the wrong direction.   We did this experiment years ago back in 2009 but we used an earth ground in the normal fashion and transmitted through the air.  I got about a 2ft. distance of wireless transmission.  Brad you made a comment on this video (about 12 comments down) that you had done a similar experiment using just a 'plasma globe' as the transmitter and got 3 ft.  The reason Doc might be revisiting this is because of the LED Cree board he has and he wants to see how that performs. Just my guess. I still have my towers that I used back then so I can replicated this experiment rather easily using the new LED AL backed arrays we are trying out. 
  Here is my video from 2009 where I used an earth ground the traditional way: https://www.youtube.com/watch?v=ZbN2lD1BOvU&t=40s

---Lidmotor

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #819 on: August 11, 2018, 09:01:05 PM »


Lidmotor,  thanks for the explaination,  we will see what comes next then.




Showing the (self)resonance frequency of an L3 coil using my FG and scope (23Mhz) see video below.

I also tested this coil and the double L3 coil setup using again my SA/TG combo.

it seems that the earlier noticed 3mhz peak comes from the (Schottky)diode ring and/or the ledstrip, because when removing
them from the D.U.T this peak is gone.

So we are left with the 23mhz peak when measuring across 2 L3 coils (+ 100 Ohm resistor) in series.
When removing the 100 ohm resistor, the peak changes to 25Mhz.

Removing also the 2th L3 coil from the D.U.T., then the 23/25mhz peak is gone, see video:

https://www.youtube.com/watch?v=FhGx8TYs0Iw

A similar situation is seen but with different peak values when using the 1N4148 diode ring.
The first peak will be around 11Mhz while the second peak is 26mhz (2x L3 coils with 100 ohm resistor inbetween).

Removing the 1N4148 diode ring with ledstrip, this frist peak is gone, and the second peak is moved to 22Mhz.

Perhaps the 50 Ohm load of the SA/TG is to much for the selfresonance to manifest on a single coil.

Itsu

Lidmotor

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Re: Dr Ronald Stiffler SEC technology
« Reply #820 on: August 11, 2018, 09:09:03 PM »
Itsu--- I think this is where Doc was going but with this new 'Loop' and Cree Board.  Why he thought he could transmit through the earth instead of the other way around is the mystery.
--Lidmotor

ramset

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Re: Dr Ronald Stiffler SEC technology
« Reply #821 on: August 11, 2018, 11:21:27 PM »
Another update from Partzman's ongoing investigation
Partzman
Quote
These test variations use three paralleled diodes for each bridge element to raise the capacitance of each leg and C1 is changed to 1.98uf as seen in the schematic below.  The tests were run at 2.2MHz and 2.3 MHz for comparison.  The test protocol has also changed in that eight samples are averaged with C1 discharged between each sample as this seems to yield more consistent measurement results.

Input and output scope pix measurements at 50ms are attached for examples plus the data tables for each frequency.

Regards,
Pm

NickZ

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Re: Dr Ronald Stiffler SEC technology
« Reply #822 on: August 12, 2018, 06:11:11 PM »
    Here below is my latest video.    Capacitive coupling on both the LED boards being feed by my 13.56MHz crystal oscillator. Running on 24v from 2  12v, 7aH batteries.
   Both led bulbs are flashlight or emergency light bulbs, in which all the leds are in parallel, (not series connected), to light at 4v full on. So, these are not 120v type bulbs, although the long led board came off of a 120v grid rechargeable system.
The oscillator can't provide the full 4v to light all the leds, fully. YET.   https://youtu.be/meFHQzR59FY

TinselKoala

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Re: Dr Ronald Stiffler SEC technology
« Reply #823 on: August 12, 2018, 09:09:46 PM »
Another update from Partzman's ongoing investigation
Partzman
Quote
These test variations use three paralleled diodes for each bridge element to raise the capacitance of each leg and C1 is changed to 1.98uf as seen in the schematic below.  The tests were run at 2.2MHz and 2.3 MHz for comparison.  The test protocol has also changed in that eight samples are averaged with C1 discharged between each sample as this seems to yield more consistent measurement results.

Input and output scope pix measurements at 50ms are attached for examples plus the data tables for each frequency.

Regards,
Pm
The fact that the big "OU" only shows up at the fastest sweep rate is telling. More samples for the scope to average = less "OU", until finally the COP approaches unity.

partzman

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Re: Dr Ronald Stiffler SEC technology
« Reply #824 on: August 12, 2018, 09:36:29 PM »
The fact that the big "OU" only shows up at the fastest sweep rate is telling. More samples for the scope to average = less "OU", until finally the COP approaches unity.

TK,

The reason the OU is large in the early part of the cycle is due to my choice of starting frequency relative to the decrease in circuit capacitance as the cap charges.  You might want to take a look at my latest test data below where frequency sweep is used to compensate for the capacitance change in order to try and maintain a constant voltage/current phase relationship.

Regards,
Pm