The bifilar pancake coil at its resonant frequency

[TinselKoala]

I am going to assume that Tesla had a strong intuitive sense and understanding of what he was observing and analyzing and applying, but he did not have the circuit analysis theory or applied mathematical background to model these systems.

The actual analysis and modeling has been around for a long time.

https://en.wikipedia.org/wiki/LC_circuit

https://en.wikipedia.org/wiki/LC_circuit#Impedance

"Therefore the series LC circuit, when connected in series with a load, will act as a band-pass filter having zero impedance at the resonant frequency of the LC circuit."

https://en.wikipedia.org/wiki/LC_circuit#Impedance_2

"The parallel LC circuit connected in series with a load will act as band-stop filter having infinite impedance at the resonant frequency of the LC circuit. The parallel LC circuit connected in parallel with a load will act as band-pass filter."

Exactly. There is nothing magic or special about the Tesla bifilar winding to produce this effect. As Tesla says in the quote, "IN EVERY COIL". The Tesla bifilar winding just has more interturn capacitance and so needs less external capacitance to make the LC circuit resonate at a given frequency. AS TESLA SAYS in the patent.

[MileHigh]

I just say, like someone could read in the posts i write , that pancake coil have special properties and that to me is irrefutable, under what i see in practical work and others already saw , something that you don't know but  only theorize .

Yes you can claim that a pancake coil has special properties.  Now, this might be the third time I will ask you:  What are the special properties of the pancake coil?  If you don't say anything one more time then people will conclude that you have nothing.

Yes Evostars , the father of pancake coils  say exactly that "it possessed no self-induction"  only need find the right frequency to that happens , and seems is that that some really don't agree

You are not understanding the links I posted earlier.  This statement, "Therefore the series LC circuit, when connected in series with a load, will act as a band-pass filter having zero impedance at the resonant frequency of the LC circuit," says that the coil possesses no self-induction at the resonance frequency because the lnductive reactance is cancelled out by the capacitive reactance.

(No self induction) is the reason to the compass not show any deflection even when  drive a load , not by the high frequency like someone say .

So you are finally making a technical statement to back up one of your claims.  Unfortunately the statement is wrong.  Your logic seems to be this: "Since the pancake coil has no self-induction, therefore the coil is not producing a magnetic field, therefore the compass needle shows no deflection."  The pancake coil is producing a magnetic field whether it is in self-resonance or not in self-resonance.  In fact, the chances of the coil in your clip actually being in self-resonance are dubious, there is a lot of resonance confirmation bias taking place between you and Evostars.  The coil having no self-induction at self-resonance does not mean that the coil is not producing a magnetic field.  Like I previously stated, the compass needle is simply not going to deflect in the presence of a high-frequency AC magnetic field.

MileHigh

[TinselKoala]

Yes, Nelson, you have "The right to disagree". You also have the "right" to be wrong. But do you have the right to push your wrong ideas onto other people?

Tell us what Tesla means when he says "IN EVERY COIL".

[citfta]

What really amazes me is how many people have jumped on this bandwagon that resonance is some kind of magic ingredient in an OU device.  I am not saying that OU is not possible although I haven't seen definite proof of it yet, but I don't think most people on these forums have a clue what resonance is or how normal and common it is.  Resonance has been used since the very early days of radio to allow you to tune in one station instead of a bunch of them at one time.  In any superterodyne receiver there are several tuned stages to give more gain and selectivity to the signal.  I am not saying more gain in power.  All of these stages are tuned to resonance for the best transfer of signal.  Ham radio operators use to have to tune their transmitters so the output stages were in resonance.  Now it is done automatically for them.  I think YouTube must be a secret plot to dumb down the people of this and other countries because that seems to be the only place anyone wants to learn from.

GET SOME REAL EDUCATION PEOPLE AND FORGET THE GARBAGE YOU ARE LEARNING FROM DUMBTUBE.

[nelsonrochaa]

"So you are finally making a technical statement to back up one of your claims. Unfortunately the statement is wrong. Your logic seems to be this: "Since the pancake coil has no self-induction, therefore the coil is not producing a magnetic field, therefore the compass needle shows no deflection." The pancake coil is producing a magnetic field whether it is in self-resonance or not in self-resonance."

Where you see i say that pancake coil has no self induction MH ?

I say :

"the father of pancake coils say exactly that "it possessed no self-induction" only need find the right frequency to that happens ."

Are you blind you are you try manipulate  what i wrote ?

" Your logic seems to be this: "Since the pancake coil has no self-induction, therefore the coil is not producing a magnetic field"

MH Is you logic not mine a logic of someone very dirty  but not surprise me i already saw that same behavior in other occasions.


"The coil having no self-induction at self-resonance does not mean that the coil is not producing a magnetic field."


MH You write that not me . Did i wrote  that not produce magnetic field ?  show me please where i wrote that .

"Yes, Nelson, you have "The right to disagree". You also have the "right" to be wrong. But do you have the right to push your wrong ideas onto other people?"

For sure i that right to disagree, but what wrong ideia are you talk about TK  ?

When he says: "in other words, as though it possessed no self-induction...", he is NOT suggesting that there are no external magnetic fields or effects associated with magnetic fields!

Erfinder where i wrote that please show me . Read very well the post , MH make that assumption because like manipulate what people say but i did not write that  .   

"How do you transfer power to a secondary coil without an alternating magnetic field? By magic? "
TK are you try put words in my mouth too  ? I will tell you to read better where i wrote that because is not my affirmation , but seems convenient to you make that assumption...

"The Tesla bifilar winding just has more interturn capacitance and so needs less external capacitance to make the LC circuit resonate at a given frequency"

TK isn't that a special property of pancake coil in relation to others coils ? It seems to me that is one special property isn't  ?    


"Yes you can claim that a pancake coil has special properties. Now, this might be the third time I will ask you: What are the special properties of the pancake coil? If you don't say anything one more time then people will conclude that you have nothing."

MH People could conclude what they want , just need be impartial and read very clearly all the posts .
You manipulate what i say nothing more then that , but is nothing new by your side .
And i know that you will continue again and again but it's ok . keep trying ...  I'm just now light a neon to you only with a hand .

real sad real sad .

Nelson Rocha