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Author Topic: Selfrunning cold electricity circuit from Dr.Stiffler  (Read 1470515 times)

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #480 on: November 03, 2007, 06:44:20 AM »
P.S. if somebody wonders,
I only have a 100:1divider scope head connected at the scope.


So, now the first new video is online at:

http://www.overunity.com/stiffler/stiffler_harti02.avi

It uses the newer DIVX.COM  video codec and MP3 audio codec.

Regards, Stefan.


plengo

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #481 on: November 03, 2007, 07:23:11 AM »
@hartberlin
Congratulations Stefan. Good job.

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #482 on: November 03, 2007, 07:24:21 AM »
Okay, now also the last movie is online:

http://www.overunity.com/stiffler/stiffler_harti03.avi

Please post your comments to this.

Many thanks.

Regards, Stefan.

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #483 on: November 03, 2007, 09:24:00 AM »
Okay, my videos are now also online at Youtube
over here:

http://www.youtube.com/user/overunitydotcom

Enjoy !

Regards, Stefan.

AhuraMazda

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #484 on: November 03, 2007, 10:35:07 AM »
Stefan,
Thank you for the report. So in your experiment you did not need the core after all. Are you talking TPU now?!

Is your scopes power input ground floating or connected to the eartth of the mains?

AM

Gustav22

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #485 on: November 03, 2007, 11:13:55 AM »
I want to take this opportunity to voice my highest respect for Dr. Stiffler AND 'the whole team' that has gathered in the operating theater.

...
http://www.overunity.com/stiffler/stiffler_harti03.avi

@hartiberlin
I watched your video, harti, and noticed that you use very long cores together with a relatively short coil. You insert the core so that it protrudes very far beyond the left side of the coil and stands out only very short beyond the other side of the coil.
Maybe it would make a difference if you positioned the coil symmetrically in the center of the core.
Note that Dr. Stiffler's 'magic coil' is also wound symmetrically over the middle of the core.

Thanks again to everybody.

k4zep

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #486 on: November 03, 2007, 12:17:06 PM »
P.S. I still have a few ferrite fridge magnets laying around here.
I will later also wound 2 coils around them and try these.
Ben, did you use Litz wire for the primary coil in your magnet-coil setup ?

No for the initial device I used 300T #32 for the secondary and 50T (now reduced to 10T) for the primary, my understanding of how the unit worked at that time was faulted, have learned a lot more since then.  I believe my magnet core has very low activity (some) but not much.  Even then though, it does show small 4/1 gain. At the mw range we are working in, that is just a small but very important whistle in the dark.

In reading the next series of post down below it is obvious that a few points are being missed.  The AV "plug" theory is alive and well and is fairly easy to replicate using basically any frequency if you have high enough voltage. It is simply a longitudinal wave device and works very well as a 1 wire transducer/rectifier ETC but that is really off topic.  BUT it is also a very good longitudinal wave impedance converter for the output of the BF......

 The excitation of the core of the BF AM radio core is a little more difficult to do but I see a lot of people working on it.  I also noticed someone suggested that the basic frequency was in the 14-18 MHz range and I am beginning to suspect that too as one of the units Dr. Stiffler built that self Osc. was producing a burst around 18 MHz if I remember correct.  It is early here coffee just starting to sink in.

k4zep

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #487 on: November 03, 2007, 12:27:54 PM »
Okay, my videos are now also online at Youtube
over here:

http://www.youtube.com/user/overunitydotcom

Enjoy !

Regards, Stefan.
Good morning Stefan, Looked at your videos on Youtube NOW put the core back in and vary frequency, you should get an output on the large winding when you hit the right freq. somewhere between 4-10Mhz!  Very good work. The tuning will be fairly sharp within 3-400 KHz.  Outside that resonant frequency (resonant frequency of the BF excititation/coil) no output.

Ben

k4zep

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #488 on: November 03, 2007, 01:28:04 PM »
Hi All,

Doing some basic looking and thinking this AM.  In playing (my wife says I'm playing) the more I realize how important the scope shots in Dr. Stifflers article on his web page are.  Everything is there that we need to know if we will just digest it!

There IS a basic resonance frequency for the BF coil/CORE device.  That is where its output is!  I now suspect that the input L/C circuit must match that frequency for maximum output.  My core resonatesor pumps @ around 8 MHZ but my L/C resonates @ 5 MHz so I see most output around that 5MHz frequency due to to the HV generated by it at that freq. in spite of the mismatch.   I must re-resonate my L/C circuit @ the base frequency of the BF core and see what happens.  I'm going to put a variable cap. to replace the 400 pf I have in there right now, give or take and see if this "theory" is correct.

I also see the burst effect where the BF coil pumps out a cycle (now you know I'm old) every 3-4 Hz depending on the input frequency....You live and die with this thing via a scope.

Actually now I'm turning off everything.  Wife wants to go to Flea Market and I am going downtown to the the annual "Strictly Sail" sailboat show in St. Petersburg, FL......150 NEW way outta my price range sailboats ($100K--Million+++) and oodles of goodles (stuff) to put on them...A man can dream....Will get back to this tonight.  Thats all for this AM.

Oh, Stefan, I like your bread-board work.....been there done that!!!!!!

Ben


MarkSnoswell

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #489 on: November 03, 2007, 01:55:51 PM »
There IS a basic resonance frequency for the BF coil/CORE device.  That is where its output is!  I now suspect that the input L/C circuit must match that frequency for maximum output.  ... I'm going to put a variable cap. to replace the 400 pf I have in there right now, give or take and see if this "theory" is correct.

The fundamental resonance appears to come from the inductance of the secondary and the junction capacitance of the IN4148 diodes. I have attached the datasheet here. The secondary sees a complex capacitance from the two AP diodes -- however even a sinple LC resonance calculation shows that the figures agree pretty well. Here is a link to a good LC resonance calculator http://www.pronine.ca/lcf.htm.  If you want to tune further then set up a resonator on the primary side for the same frequency...

You could try to tune the two just out of phase -- this will result in the power beating between the input and output -- exactly the same as in good tesla coil design. This may work better than exact tuning as the total power transfered wont be any less but the higher voltages at the AP may reduce losses in power transfer there. It's hard to predict and the tight coupling of the primary and secondary may limit this aproach.

Whatever you do -- tuning the primary side to the same frequency will certainty reduce losses in the AP and inprove power transfer.

cheers

mark.
 

DrStiffler

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #490 on: November 03, 2007, 01:56:42 PM »
@Mark
Thanks again. My observations were only with the signal generator attached. If the scope is connected the OP seems quite strong. The Blue LED turns on quite nicely then.


@DrStiffler,
I have a batch of the 680uH cores and as they are the critical part of this investigation I wanted to clear up a few points.

1- The number turns you specified at 9 turns but I count 11 in the picture.
2- You did say that the sense of the L3 should be the same as the L2 core. Please can you verify that. Either my L2 cores are wound the wrong way by the manufacturer or the  image may be mirrored somehow.
3- You use a symbol for the L2-L3 combination which indicates 3 different windings. L2, as arrives from the supplier only has one winding. Am I missing something?

regards

AM
The coil issue is covered earlier in the thread and on my web site, but the primary needs to be wound in the sane direction as the secondary.

The diagram although looking like two coils on the secondary is meant only to show that the secondary has more turns than the primary.

To find out if you did wrap one wrong, look t my site, I have a whole section on how this was found and solved.

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #491 on: November 03, 2007, 08:32:42 PM »
Stefan,
Thank you for the report. So in your experiment you did not need the core after all. Are you talking TPU now?!

Is your scopes power input ground floating or connected to the eartth of the mains?

AM


Yes, my crappy scope is grounded unfortunately.
I have to glue some tape onto the ground wire, so it is isolated.
I will do this today and will see, if it makes a difference.

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #492 on: November 03, 2007, 08:35:52 PM »
I want to take this opportunity to voice my highest respect for Dr. Stiffler AND 'the whole team' that has gathered in the operating theater.

...
http://www.overunity.com/stiffler/stiffler_harti03.avi

@hartiberlin
I watched your video, harti, and noticed that you use very long cores together with a relatively short coil. You insert the core so that it protrudes very far beyond the left side of the coil and stands out only very short beyond the other side of the coil.
Maybe it would make a difference if you positioned the coil symmetrically in the center of the core.
Note that Dr. Stiffler's 'magic coil' is also wound symmetrically over the middle of the core.

Thanks again to everybody.

Yes,I tried it already and only at the end of the core I get better brightness than in the center..
Do you think it would be good to break thecore apart and make it shorter ?
Maybe it depends on the length of the core also ?

Maybe some kind of standing wave inside the core ?
This would give a whole new perspective to it all and
the input frequency alsomust be choosen to have a standing
wave inside the core ?

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #493 on: November 03, 2007, 08:57:37 PM »
Dear Ben,
well with my selfbuilt oscillator the tuning is not easy.
I have to get the trim-capacitors to turn right and the frequency
can also still shift a bit.

I have 2 trim capacitors in parallel,
this one, 3 to 40 pF :

(http://www.segor.de/bilder/000013a1.jpg)
and
this one, 6 to 80 pF:
(http://www.segor.de/bilder/0000141b.jpg)

In the loop back of the inverter I have a 100 Ohm resistor.

Then I tried to replace the 100 Ohm resistor with a 100 Ohm pot and
75 Ohm resistor in series, everytime I touched the pot it
changed the frequency dramatically, so I am better with the fixed
100 Ohm resistor and the trim caps.

Maybe I should buy better equipment to get myself a better
function generator.
I will see, what I can find on Ebay Germany.
Or maybe I will hack my old function generator to queeze a few more Mhz out
of it... I will see..

hartiberlin

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Re: Selfrunning cold electricity circuit from Dr.Stiffler
« Reply #494 on: November 03, 2007, 09:36:08 PM »
Dr. Stiffler has just updated his website with
a higher power incand. bulb output experiment.

Have a look at his new scopeshots.

Reminds me a lot at the scopeshots that Roberto und Otto
got  in their TPU research...

http://www.drstiffler.com/ce4.asp


Regards, Stefan.