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Author Topic: Dr Ronald Stiffler SEC technology  (Read 278892 times)

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #615 on: July 19, 2018, 10:05:26 PM »

Hmmm,

i used my SA to measure the main peak (13.6Mhz) of the Crystal oscillator using 1 and 5 crystals parallel.

First screenshot is with 1 crystal inserted, second screenshot is with 5 crystals parallel.

I do not see any foul up of the signal like 5 adjacend peaks on the 5 crystal screenshot.
I do see that the signal is higher in frequency (parallel capacitance?) and stronger (sympathetic resonance?) on the 5 crystal screenshot.

I also have some screenshots of a spectrum range overview which shows that the 1x crystal has less stronger
harmonics then the 5x parallel crystal circuit has which seems to confirm Gyula's statement.

For what its worth,   itsu

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #616 on: July 19, 2018, 10:33:26 PM »
Hi Itsu,

I am mistaken, sorry and the crystals should be so close to each other that they cannot oscillate individually what I thought.  This is what your measurement basically shows, right?  Thanks for checking this.

Maybe you also checked this same at the 5th or say at the 7th harmonic of the 13.56 MHz on the SA? where any difference may manifest at a higher distance on the frequency axis.
I mean if there is a difference of say 70 Hz between two paralleled crystals at 13.56 MHz, then this difference will be 5x or 7x 70 = 350 Hz or 490 Hz which may be already easier to notice IF these two lines exist,  that is.
Suppose IF these two vertical lines existed next to each other with a distance between them being 490 Hz at around 95 MHz, would the SA zoom-in resolution be fine enough to notice it? this can also be a question provided the two lines exist of course.
Will think on this further on. Comments are welcome from anyone of course.

Gyula

Lidmotor

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Re: Dr Ronald Stiffler SEC technology
« Reply #617 on: July 20, 2018, 06:05:30 AM »
I tried an old Dr. Stiffler 'one wire energy transmission' experiment today using my 13.56MHz Crystal Oscillator.  It worked.

https://www.youtube.com/watch?v=3KzctX1oxzE

--Lidmotor

erfandl

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Re: Dr Ronald Stiffler SEC technology
« Reply #618 on: July 20, 2018, 08:28:47 AM »
Hi Erfandl,

Okay, thanks for showing the current measurement results.  As I indicated before I did not blame the validity of your previous measurement on the reducement in input current when using 3 crystals in parallel: with oscillators it is always a good practice to filter the supply rails when measuring DC input current or learn about DC input power.   
So the mistery remains why the input current reduces and the brightness increases.
I think you have a 3rd 1000 uH choke coil available, right? Would you put this 3rd choke in parallel with the collector choke coil ? First do it with a single crystal and watch input current and brightness when you plug in the 3rd choke, then do the same when the 3 crystals are plugged in again. By the way, what is the resistance of such chokes? You can measure it with your digital multimeter when they are not plugged into the circuit.
With the parallel connection of two chokes in the collector I do not expect anything fancy would happen, just a suggestion to learn on its effect if any.  What you found as good by using the Pi filter is now there is no need for the use of the ferrite rod...  8)

You wrote: "DC DC boost converter pull 3.4 mA from battery !!!"

Would you tell what is the battery voltage you use to drive the boost converter?  And what is the output voltage you set the the converter to?  Just wish to know whether the 3.4 mA is a typo instead of say 34 mA ?

Thanks,  Gyula
Hi gyula. the battery is 3.7 volt and the boost coverter output is 24 volt. today I testing the brightness output with my own LUX meter BH1750 sensor and Blynk app. here the result
also with three crystal LUX is stable ( screenshot test with three crystal )


itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #619 on: July 20, 2018, 10:38:35 AM »
Hi Itsu,

I am mistaken, sorry and the crystals should be so close to each other that they cannot oscillate individually what I thought.  This is what your measurement basically shows, right?  Thanks for checking this.

Maybe you also checked this same at the 5th or say at the 7th harmonic of the 13.56 MHz on the SA? where any difference may manifest at a higher distance on the frequency axis.
I mean if there is a difference of say 70 Hz between two paralleled crystals at 13.56 MHz, then this difference will be 5x or 7x 70 = 350 Hz or 490 Hz which may be already easier to notice IF these two lines exist,  that is.
Suppose IF these two vertical lines existed next to each other with a distance between them being 490 Hz at around 95 MHz, would the SA zoom-in resolution be fine enough to notice it? this can also be a question provided the two lines exist of course.
Will think on this further on. Comments are welcome from anyone of course.

Gyula

Gyula,

sorry, yes i did take a look to some harmonics (5th, 7th) the same way as the base peak, and also did not notice any difference.

The above screenshot where taken with a frequency span of 306kHz, so at the 7th harmonics i should have seen something i guess.

Below the 2 screenshots from the spectrum overview showing the harmonics with both 1 crystal in and then 5.
Peak 8 is again a strong local  Fm station leaking through.



Itsu


gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #620 on: July 20, 2018, 05:57:34 PM »
I tried an old Dr. Stiffler 'one wire energy transmission' experiment today using my 13.56MHz Crystal Oscillator.  It worked.

https://www.youtube.com/watch?v=3KzctX1oxzE

--Lidmotor
Hi Lidmotor,

Your air core coil (let's label it as La) identical to the Doc's L3 type and mounted on that prototype board just absorbs resonant energy from the other L3 air core coil (let's label it Lb) that is driven by the crystal oscillator.  Because both La and Lb coils have the same resonance frequency, part of the resonant energy from Lb is transferred to La by so called mutual induction,  this is why the LEDs can light up on the proto board when a high enough induced voltage can defeat their threshold voltage level via the AV plug diodes.

The word "mutual" has importance: it indicates that both La and Lb have become part of a common resonant system and do influence each other: whenever you tune Lb coil to the xtal frequency while the La coil is not nearby, then you need to retune it again when your La coil is placed close to it. AND this explains why the LEDs at the other end of the long single wire is distinguished the moment La is coupled to Lb: an Lb coil detuned from the crystal frequency cannot provide enough energy to light that remote LEDs. This is the 'sort of dynamics' (as you put it) going on when you move back and forth the La coil placed on the proto board (video time 2:40).   You can look up the term 'mutual inductance' by goodle if needed.

A notice: I think the output voltage of your boost converter is influenced by the near field of the long single wire and probably also by the EM field of  coils La and Lb.  Have you noticed the output DC voltage was 13.4V at the start of the video and it climbed up to 18.2V by video time 1:39?  And when you move back and forth the proto board with the La coil on it, the DC output goes down to 13.2V and then up to 14-15V (around video time 2:40).
And when you put down the board the voltage settles at 13.2V again (2:48) and as you moved your hand nearby the converter and the coils the DC output was fluctuating and went up 14.1 V or so at the end of the video. 
Probably the EM field creeps into the control circuit of the boost converter IC and fools it at times.  By studying the IC pins (if the chip is idenfyable) where control may have input, some 10 to 22nF ceramic capacitors may help filter the RF influence.
Thanks for making and showing this setup.
Gyula

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #621 on: July 20, 2018, 06:09:12 PM »
Hi gyula. the battery is 3.7 volt and the boost coverter output is 24 volt. today I testing the brightness output with my own LUX meter BH1750 sensor and Blynk app. here the result
also with three crystal LUX is stable ( screenshot test with three crystal )
Hi Erfandl,
Thanks for the Lux meter screenshots, they nicely show the higher light outputs as you placed 2 and 3 crystals in parallel.

Okay on your boost converter has 24 V DC output, and its input receives the 3.7 V battery.
Now please explain where is the 3.4 mA current measured you mentioned in your earlier post above? Or was it 34 mA?

I understand that the current input to the oscillator reduces when you use 3 crystals (from 28.4 mA to 23.1 mA):  did you use the 24 V DC from the boost converter back then?

Thanks,
Gyula

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #622 on: July 20, 2018, 06:36:29 PM »
Gyula,
sorry, yes i did take a look to some harmonics (5th, 7th) the same way as the base peak, and also did not notice any difference.
The above screenshot where taken with a frequency span of 306kHz, so at the 7th harmonics i should have seen something i guess.
Below the 2 screenshots from the spectrum overview showing the harmonics with both 1 crystal in and then 5.
Peak 8 is again a strong local  Fm station leaking through.
Itsu
Hi Itsu,
Many thanks for all these measurements.  I will think on this multi crystal oscillator operation further on and return to it when a useful explanation can be found.

I would make a single notice to the spectrum analyser screen shots you kindly included.  If I compare the harmonic frequency values reported under the swept screens I find they are fully identical, both for the single xtal case and the 5 xtal case. 

For instance say the 7th harmonic is at 94.778611 MHz with the single xtal and the same with the 5 xtals, only the amplitudes differ which is okay of course.  I mean you earlier measured about 5 kHz difference between the 1 and the 5 xtals at the base frequency:  13.559 MHz for the single xtal and 13.564 MHz for the 5 xtals  (from your Reply #615) and this 5 kHz shift is ok for the 5 xtal case due to the higher self capacitance in parallel.

I would think that all the harmonic frequencies for the 5 xtal case would shift also higher by several kHz, compared the same to the single xtal harmonics.   Understand?

Gyula

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #623 on: July 20, 2018, 09:09:55 PM »

Gyula,

yes i did notice that too, but i think its due to the nature of this SA, its not a professional one,
its probably one of the cheapest you can buy and lacks some accuracy on this 124Mhz range.

Zooming in onto a specific peak will show the accurate frequency (like 13.559Mhz for a 13.56Mhz crystal).


Itsu

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #624 on: July 20, 2018, 09:16:55 PM »
Okay Itsu, thanks and I also suspected the SA may cause that. 

Gyula

Lidmotor

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Re: Dr Ronald Stiffler SEC technology
« Reply #625 on: July 20, 2018, 09:36:48 PM »
Gyula---Thanks for the analysis of my last video showing the one wire transmission setup.   Your 'mutual induction' explanation regarding the coils was very interesting. Those coils sure are having a conversation about something and telling that light at the end of the string to-- HEY LIGHT UP.  I'm glad that you also noticed that the DC - DC voltage booster was being effected by the whole thing.  Fascinating stuff.  Thanks.

---Lidmotor

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #626 on: July 20, 2018, 09:45:35 PM »
Hi Lidmotor,
I need to make an addition to my post above:  it is inductive coupling which also happening between the two resonant coils and they 'mutually' detune each other, the closer they are placed to each other.  This also needs considering and can be corrected by retuning them.

Gyula

itsu

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Re: Dr Ronald Stiffler SEC technology
« Reply #627 on: July 20, 2018, 10:37:13 PM »

I went back to the basic circuit like erfandl (12.5V battery, 1K resistor, 200K trimmer pot, 22pF C/E cap,
100nF coupling cap), so no tank circuit (toroid / var cap) and measured the input current and the output
signal to the L3 /ledstrip combo.

No leds where lighting.

nbr of x-tals    output voltage pp    input current
1                    10.6Vpp                  6.86mA
2                    11.2Vpp                  6.80mA
3                    11.7Vpp                  6.75mA
4                    11.9Vpp                  6.71mA
5                    12.2Vpp                  6.65mA


Itsu   

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #628 on: July 20, 2018, 10:47:43 PM »
Hi Itsu,
Very useful, thank you. 

I think Erfandl uses a 1000 uH choke coil in the collector and not a 1 kOhm resistor any more.
https://overunity.com/17249/dr-ronald-stiffler-sec-technology/msg523714/#msg523714 
This involves a much higher than 1 kOhm, mainly inductive and increasing impedance for the collector current and its harmonics.
Gyula

gyulasun

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Re: Dr Ronald Stiffler SEC technology
« Reply #629 on: July 21, 2018, 01:02:42 PM »
Hi Itsu,

I may have sounded a bit unpolite by mentioning quickly the choke coil in the collector while you used the 1 k resistor, sorry for this. I only wanted to indicate the current decrease with the increasing number of paralleled xtals would be more pronounced when a choke coil is in the collector, a resistor limits both the AC and DC currents while a coil limits mainly the AC current.
Anyway, it remains to be figured out why the input DC current reduces and the output RF power increases when the number of xtals is increased in this oscillator.

Gyula