Wireless power transmission using Joule Thief

[synchro1]

@TinselKoala,

Below is a partial quote from your post above:

"Bifilar high voltage? Are you sure you don't mean "multiple strands"? The term "bifilar" is almost as misused as the AC coupling function on a scope. I'm not at all sure that a JT would work with two true bifilar wound coils, but I'm willing to find out.

And if the coils are "high voltage" why does the LED survive? In the typical JT circuit, the "spike" of voltage that we channel to the load (LEDs, another JT, whatever) is produced by the collapse of the magnetic field in the coils we are using. To get "high voltage" by my definition in this spike.... six hundred, a thousand volts or more.... the coils need relatively high inductance. To achieve the high inductance in an air core coil you need lots of wire and large"

These comments of yours amount to nothing more then a bunch of conceited obfuscatory rubbish.

One can see from the diagram below that the voltage potential inside this patented Tesla bifilar is 250,000 times greater then the single wire. Hence the "Hi-Voltage" designation. This terminology has been in use the entire time to help identify it's unique configuration. Where have you been up untill now?

The other thing you apparently fail to understand is that this coil's self inductance cancels out, and is null. Tesla's "Hi-Voltage" bifilar coil also generates and stores it's own capacitive charge. This coil dosen't need an additional componant to achieve resonance, its already built in. You need to brush up on your basics!

[TinselKoala]

How many times do you want to post the same thing?

Actually if you look closely you will see that the term "bifilar" is used in this forum in at least two different ways. There is the "hairpin" bifilar which cancels induction and there is the true Tesla bifilar, a drawing of which you have posted. And then some people call  "bifilar" or multifilar, a pair or a bunch of separate strands wound together. Some people call Bedini SGM coils "bifilar". It was my impression that Sohei is using multiple strands but that they are connected as to produce effectively one long single coil, not a Tesla bifilar or a hairpin bifilar. I haven't seen an actual description though, so please correct me with a reference if you can, I'd be very pleased to be wrong about his coil's construction... but I am right about the effects.

ETA: Yes, in the post you quote I say that the Tesla bifilar can have zero inductance... this is an error, I mean that inductive and capacitive reactances can cancel in the Tesla bifilar, the hairpin bifilar can have zero inductance. Thank you for pointing out my error, by making the same error yourself. 

You also say

These comments of yours amount to nothing more then a bunch of conceited obfuscatory rubbish.

One can see from the diagram below that the voltage potential inside this patented Tesla bifilar is 250,000 times greater then the single wire. Hence the "Hi-Voltage" designation. This terminology has been in use the entire time to help identify it's unique configuration. Where have you been up untill now?

The other thing you apparently fail to understand is that this coil's self inductance cancels out, and is null. Tesla's "Hi-Voltage" bifilar coil also generates and stores it's own capacitive charge. This coil dosen't need an additional componant to achieve resonance, its already built in. You need to brush up on your basics!

In the second place... it is not the "voltage potential" that is so much greater, it is the stored ENERGY, different things. If you would stop trying to attack me and take a look at my videos on the topic you will see that I understand the Tesla patent fully well.  I'm not sure you do, though.

And in the third place.... A HAIRPIN bifilar coil's induction cancels out. A true TESLA bifilar coil's inductance does not.

http://en.wikipedia.org/wiki/Bifilar_coil

An early example of the bifilar coil can be seen in Nikola Tesla's United States patent 512,340 of 1894. Tesla explains that in some applications (which he does not specify) the self-inductance of a conventional coil is undesired and has to be neutralised by adding external capacitors. The bifilar coil in this configuration has increased self-capacitance, thereby saving the cost of the capacitors. It is notable that this is not the kind of bifilar winding used in non-inductive wirewound resistors where the windings are wired anti-series to null out self-inductance.

http://letsreplicate.com/teslas-pancake-coil-161/

The first of those ideas is the same-plane bifilar pancake coil, which was originated by Tesla (Tesla Coil Patent 512340) This type of coil, when configured in the method described in the patents (the outside of one wire connected to the inside of the other), more than doubles the coil's self-inductance.  At the resonant frequency of the coil, the magnetic field covers the entire face of the coil and rotates, making it an excellent radiator of EMF.  There are several other ways the coils can be connected together, each have wildly different uses.  This project will use capacitive coupling of the wires, which will result in the coil acting like a capacitor.

Now, I'm not going to insult you for being wrong three times in one post..... but maybe I should.

And maybe you should brush up on your basics. --- Learning how to quote posts would be a good start.
 

[sohei]

Greetings to all.....
Newbie in the area.

I am not sure if what my experiments showed can be called as JT. For me they are more to Oscillators, please correct me if I am wrong.
TK, thanks for all support and help you have being giving. And thanks to Fausto.

My coils were made just to be an air coil oscillator. They indeed are connected to be so.
I have tried a cap on the receiver coil and nothing happened. Maybe they do not work with those kind of coils. I also tried to invert the polarity of the led, no changes.
The receiver coil can be the same length of the transmitter coil or half of it. There is a video where I used one receiver coil that is just one wire with no central connection and half of the length of the transmitter. They can be smaller on diameter too.

Another effect I noticed is that depending of the rotation of the coils, the receiver coil can "produce" more energy. And I am not sure if in fact they are a transmitter and receiver coils. It may be more like TK said. They are air coils coupled. Well... I do not understand those effects and they were not made for research. The research and experiments were made for the accidental coupling.

My best regards to all,
Max.

[synchro1]

@TinselKoala,

                  There's somthing wrong with the site. I tried to attach those posts to the main thread where they failed to appear and they doubled back over here, now I can't delete them because that's malfunctioning.

                  Sohei tried to add the capacitor and it made no difference. This proves I'm right. He has his bifilar air core coil wired as Tesla's patented hi-voltage coil, identical to the diagram. That's why the addition of the capacitor makes no difference, the coil's self capacitance has it in resonance already. This makes your video irrelevent. Plus he reversed the LED and that made no difference. Another irrelevency. That's two irrelevencies TWO. Number three is your trouble with our ""Hi-Voltage" established nomenclature to describe the wiring configuration shown in the diagram. So there! 

[xee2]

@ Positron360


You might find these interesting:


simple one wire circuit using Joule thief  >>  http://www.youtube.com/watch?v=z8cb1G10AEw&feature=plcp


simple wireless circuit using slayer exciter  >>  http://www.youtube.com/watch?v=-HgrXZGirwA&feature=plcp