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Author Topic: The bifilar pancake coil at its resonant frequency  (Read 399893 times)

Offline synchro1

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Re: The bifilar pancake coil at its resonant frequency
« Reply #675 on: April 12, 2017, 03:00:41 PM »
Be nice synchro.

How are those experiments coming along-that are to back up your claims?.

Brad

@Tinmaqn,

You call insulting someone of my advanced knowledge a 9 year old nice? I'm warning you, if you delete one more of my comments, I will initiate a new thread under a category where you have zero moderation authority.

Offline evostars

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Re: The bifilar pancake coil at its resonant frequency
« Reply #676 on: April 12, 2017, 03:21:59 PM »
I made a video about the bifilar coil experiment producing 950Vdc
https://youtu.be/KbtK9jrk_JI
Why is the distanced south reversed coil, having a much lower resonant frequency then when its normally on top.
Why do the 180 degree out of phase signals, add up?

Offline synchro1

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Re: The bifilar pancake coil at its resonant frequency
« Reply #677 on: April 12, 2017, 03:44:21 PM »
@Tinman,

I dosed it anyway. See you fools over there.

Offline MileHigh

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Re: The bifilar pancake coil at its resonant frequency
« Reply #678 on: April 12, 2017, 07:00:41 PM »
I too went out and bought an induction cooker,when Naudin was fooling around with them-the so called OU generator.

I can boil water in a stainless steel pot,that a powerful neo magnet will not stick to,and i can also boil water in my copper camping kettle on top of the induction cooker.
Ali pots work just as well.
So there is the three materials MH listed as !will not work! on an induction cook top,but they all work just fine on mine.

I also had no trouble firing up the copper pancake coil during my experiments.

Brad

Well I am going to assume that the text that I quoted from Wikipedia was entered by someone that paraphrased the original text from a manual for an induction cooktop.  I am also going to guess that the reason the manufacturer states that is because the heating efficiency of the induction cooktop drops dramatically when using an aluminum pot, as an example.  To meet their Energy Star requirements they need to discourage consumers from using the induction cooktop the "wrong" way.  As Carroll stated, apparently some induction cooktops will not switch on if there is nothing ferromagnetic placed on them, presumably for the same reasons.

If you want to correct errors, I suggest you go to your post #579 and fix that.

Offline TinselKoala

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Re: The bifilar pancake coil at its resonant frequency
« Reply #679 on: April 12, 2017, 10:35:44 PM »
Calm down, you are both right and both wrong. The easiest way to make sure someone doesn't use a _ceramic_ utensil on an induction hob is by incorporating the magnetic detector scheme. These things are made to the lowest pricepoint they can get. And they probably put out enough power to melt a flimsy aluminum utensil like a coffee percolator pot, if you let it boil dry. Hence the iron plate for nonferrous utensils (which sometimes costs as much as the hob itself, I've checked!)

Offline maxc

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Re: The bifilar pancake coil at its resonant frequency
« Reply #680 on: April 12, 2017, 10:37:04 PM »
I made a video about the bifilar coil experiment producing 950Vdc
https://youtu.be/KbtK9jrk_JI
Why is the distanced south reversed coil, having a much lower resonant frequency then when its normally on top.
Why do the 180 degree out of phase signals, add up?
  You need to measure the input power.

Offline TinselKoala

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Re: The bifilar pancake coil at its resonant frequency
« Reply #681 on: April 12, 2017, 10:45:05 PM »
Negative current moving backwards is positive current. A negative Henry is the equivalent of one Tesla of magnetic strength. Both have positive values.

The spark gap collapse is infinite, not the spark. The collapsing magnetic field generates a magnet wave that instantly reaches the most distant parts of the Universe in the Macro space and the infinite reaches of the Quantum-sphere. Tesla invented radio, and his saprk gap generator could send a signal that magnetized metal coherer filings at a distance as Marconi discovered. Tesla believed Gravity and Magnetism were twins like Maxwell electricity and light.

Jerry Bayles evolved a "Unified" field theory with gravity as a cosmological constant rather then light as Einstien with his "Special" theory. The gravity wave is immediate and instantaneous, taking no time to travel at all.

The "Black Hole" at the Galaxy's center has no space but it's huge mass is spinning faster then the speed of light. The gravity spins outward spirally like a nautilus shell describing a proportion known as PHI (1.618).  The mass of the "Spiral Galaxy" and the spatial positions of the inner planets of the solar system sit on the spiral loops. Electron shells follow suit.

I taught G.E.D. to kids with no former schooling and got mutilated here for a jug comparison to a capacitor discharge. Shameless insults were directed at me which would have resulted in a physical beating if made to my face. I demand mutual respect.

You are truly hilarious. You are once again making false claims and claims without any empirical support. As far as the "shameless insults" are concerned: Look back in this thread and see just who emitted the "shameless insults". 

You don't even realize that the Henry and the Tesla have different units, so cannot possibly be "equivalent" whether one is "negative" or not. You have no idea about the speed of "spark gap collapse" and anyone with the right equipment can prove you wrong..."infinitely".
Quote
Tesla invented radio, and his saprk (sic) gap generator could send a signal that magnetized metal coherer filings at a distance as Marconi discovered.
That is the only true statement in your whole post.

Offline evostars

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Re: The bifilar pancake coil at its resonant frequency
« Reply #682 on: April 12, 2017, 11:43:06 PM »
  You need to measure the input power.

My setup is far from ideal right now. The IGBT produces short sharp pulses, but, It does so by basically shorting out the power supply over the coil. and this it does 50% of the frequency. I really need to fix this, before I can make a proper measurement. The Igbt should open and close very shortly. Another challenge to overcome.


Offline tinman

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Re: The bifilar pancake coil at its resonant frequency
« Reply #683 on: April 13, 2017, 01:07:54 PM »
@Tinmaqn,

You call insulting someone of my advanced knowledge a 9 year old nice? I'm warning you, if you delete one more of my comments, I will initiate a new thread under a category where you have zero moderation authority.

Synchro

I am an Australian,and fear not your idle threats.

I will delete any of your post that are rude insults toward other members here.

Brad

Offline tinman

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Re: The bifilar pancake coil at its resonant frequency
« Reply #684 on: April 13, 2017, 01:13:09 PM »
Well I am going to assume that the text that I quoted from Wikipedia was entered by someone that paraphrased the original text from a manual for an induction cooktop.  I am also going to guess that the reason the manufacturer states that is because the heating efficiency of the induction cooktop drops dramatically when using an aluminum pot, as an example.  To meet their Energy Star requirements they need to discourage consumers from using the induction cooktop the "wrong" way.  As Carroll stated, apparently some induction cooktops will not switch on if there is nothing ferromagnetic placed on them, presumably for the same reasons.

If you want to correct errors, I suggest you go to your post #579 and fix that.

MH

I was not having a dig at you.
I was just stating that my induction cook top, has no problem firing up with any of the metals you listed.

I checked my post 579,and see no error.
Could you point it out to me ?.

Cheers


Brad

Offline synchro1

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Re: The bifilar pancake coil at its resonant frequency
« Reply #685 on: April 13, 2017, 05:18:42 PM »
Synchro

I am an Australian,and fear not your idle threats.

I will delete any of your post that are rude insults toward other members here.

Brad

@Tinman,

That's where they spell does upside down.

Offline synchro1

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Re: The bifilar pancake coil at its resonant frequency
« Reply #686 on: April 13, 2017, 05:23:37 PM »
You are truly hilarious. You are once again making false claims and claims without any empirical support. As far as the "shameless insults" are concerned: Look back in this thread and see just who emitted the "shameless insults". 

You don't even realize that the Henry and the Tesla have different units, so cannot possibly be "equivalent" whether one is "negative" or not. You have no idea about the speed of "spark gap collapse" and anyone with the right equipment can prove you wrong..."infinitely".  That is the only true statement in your whole post.

@Tinselkoala,

Admitting you don't know something, like the definition of "Negative Micro-Henry" and saking for an explanation is different from stating something that's dead wrong. Look Henry up at the Wikipedia site, and be man enough for once to admit you're wrong.

Here's what you said:

"The Henry and the Tesla have different units".

Lidmotor was right; You just don't understand inductance. You persistently cover your ignorance with chronic abuse. You should be ashamed of yourself.

A Henery equals a Tesla times Meters squared divded by Amperes.

Offline MileHigh

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Re: The bifilar pancake coil at its resonant frequency
« Reply #687 on: April 13, 2017, 05:43:33 PM »
MH

I checked my post 579,and see no error.
Could you point it out to me ?.

Cheers

Brad

You posted a graphic and said that it's the magnetic field for a pancake coil but it's not, it's the magnetic field for a ring-shaped magnet.

Offline MileHigh

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Re: The bifilar pancake coil at its resonant frequency
« Reply #688 on: April 13, 2017, 05:46:08 PM »
@Tinselkoala,

Admitting you don't know something, like the definition of "Negative Micro-Henry" and saking for an explanation is different from stating something that's dead wrong. Look Henry up at the Wikipedia site, and be man enough for once to admit you're wrong.

A Henry equals a Tesla times Meters squared divded by Amperes.

A Henry might be a Tesla times meters-squared divided by amperes, but a Henry is NOT a Tesla.

Offline synchro1

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Re: The bifilar pancake coil at its resonant frequency
« Reply #689 on: April 13, 2017, 05:50:23 PM »
A Henry might be a Tesla times meters-squared divided by amperes, but a Henry is NOT a Tesla.

@Tinselkoala,

Now you're trying to weasel out of it! Everyone can see you now for what you are.

"Henry (H). Henry is the unit of inductance. 1H = 1Wb / 1A ... One ampere-hour is equal to 3600 coulombs".