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Author Topic: Joule Thief 101  (Read 947646 times)

EMJunkie

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Re: Joule Thief 101
« Reply #1770 on: April 11, 2016, 02:20:18 PM »
For others, reading properly...

If one were to rearrange the Equation for Faradays Law of Electromagnetic Induction, no matter how it was rearranged, there is no way of knowing or Predicting the values for θ and ϕ - Substitute Values could be derrived, but certianly these would only ever be assumptions. Hey PW, again... Thats it, sound it out...Ass...Ump

in this Equation: ϕ = BA COS(θ)

It can not be accurately predicted!

This fact alone proves PW is Wrong!!!

   Chris Sykes
       hyiq.org

tinman

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Re: Joule Thief 101
« Reply #1771 on: April 11, 2016, 02:33:44 PM »


As I posted earlier on:


and I quote again directly from this document:

 

Transformers, as is stated in the document I provided, do have phase relationships. Most all of these relationships are governed by Reactance of the Circuit, thus the reason we have seen phase angles that have been shown.

Ref:Transformer Phasor Diagrams come in several varietys, I have listed them below:

   Chris Sykes
       hyiq.org

Faradays law states--Faraday's law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF)—a phenomenon called electromagnetic induction.

Faraday's Law. Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil

Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a time varying magnetic field.

Faradays law predicts that a magnetic field changing in time induces an EMF in a coil of wire.


Faraday’s Law of Induction describes how an electric current produces a magnetic field and, conversely, how a changing magnetic field generates an electric current in a conductor.


Quote
I have clearly said on many ocasions, E.M.F is not Current, and it is not Magnetic Flux!

That is correct.

Quote
Faradays Law of Electromagnetic Induction Predicts E.M.F, Not Magnetic Flux and Not Current!

That is incorrect Chris.
The very definition of Faradays law states that a magnetic field that changes in time will produce an EMF across a conductor/coil..
When you pass a permanent magnet across a coil of wire(meaning the magnetic field is changing in regards to that coil of wire),and EMF will be generated across that coil of wire.
The very heart of Faradays law of induction predicts this to happen.

In my schematic(posted once again below),you need to see the primary coil as that passing permanent magnet,and the secondary coil as the coil of wire the PM is going to pass.
As we approach the coil of wire with the PM(PM field rising in the coil of wire),the EMF across that coil will increase in one polarity. As the PM reaches the middle of the coil,there is no longer an increase in magnetic field strength(magnetic field no longer changing in time),and at this point,the EMF across the coil will be 0volts. As the PM leaves that coil,an EMF of the opposite polarity will form across that coil,as the magnetic field is once again changing in time.--->This is faradays law of induction-a magnetic field that changes in time in relation to a conductor, will produce an EMF across a conductor.
Your primaries EMF maybe 180* out of phase with the secondaries EMF,but that has nothing to do with the question i asked in regards to the schematic below,and associated scope shot.
'
TKs answer in regards to my specific question is absolutely correct,and is the very heart of Faradays law of induction.

Brad

tinman

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Re: Joule Thief 101
« Reply #1772 on: April 11, 2016, 02:39:22 PM »


  My ducks dive in their pond and emerge without a spot of water on them.
  How do they do it?
                     John.

The pond was empty.

EMJunkie

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Re: Joule Thief 101
« Reply #1773 on: April 11, 2016, 02:48:50 PM »
Faradays law states--Faraday's law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF)—a phenomenon called electromagnetic induction.

Faraday's Law. Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil

Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a time varying magnetic field.

Faradays law predicts that a magnetic field changing in time induces an EMF in a coil of wire.


Faraday’s Law of Induction describes how an electric current produces a magnetic field and, conversely, how a changing magnetic field generates an electric current in a conductor.


That is correct.

That is incorrect Chris.
The very definition of Faradays law states that a magnetic field that changes in time will produce an EMF across a conductor/coil..
When you pass a permanent magnet across a coil of wire(meaning the magnetic field is changing in regards to that coil of wire),and EMF will be generated across that coil of wire.
The very heart of Faradays law of induction predicts this to happen.

In my schematic(posted once again below),you need to see the primary coil as that passing permanent magnet,and the secondary coil as the coil of wire the PM is going to pass.
As we approach the coil of wire with the PM(PM field rising in the coil of wire),the EMF across that coil will increase in one polarity. As the PM reaches the middle of the coil,there is no longer an increase in magnetic field strength(magnetic field no longer changing in time),and at this point,the EMF across the coil will be 0volts. As the PM leaves that coil,an EMF of the opposite polarity will form across that coil,as the magnetic field is once again changing in time.--->This is faradays law of induction-a magnetic field that changes in time in relation to a conductor, will produce an EMF across a conductor.
Your primaries EMF maybe 180* out of phase with the secondaries EMF,but that has nothing to do with the question i asked in regards to the schematic below,and associated scope shot.
'



Brad, I have quoted more than enough references.

If I wanted to fill the bucket with water, what would i have to know prior to filling the bucket with water?

That I need Water and a Bucket.

I would need suficent water, to fill the bucket.

Required Materials and Quantitys to complete a task. Certain relationships are also needed, all items are necessary to be in proximity to each other before completing the task.

It is the Change in Flux (ϕ) that Induces and EMF, but with any Change in Flux (ϕ) an associated EMF is also Present. EG: A moving Magnetic Constitutes an Electric Field...

Each EMF is 180 out of phase. Lenz's Law.

And, as I have also very clearly shown, the Phase relationships are very much dependant on Complex Impedances. Although E2 will be 90 Degrees to the Flux (ϕ), I1 might be 120 Degrees.


TKs answer in regards to my specific question is absolutely correct,and is the very heart of Faradays law of induction.

Brad

I disagree, 90 Degrees is what your Circuit was showing. Its not Predicted. Again, its a Phase relationship, thats necessary, necessary to know, measure in some cases.

This phase relationship can be changed! It can change the system!

This is not a "Predicted" quantity. Its a Required aspect!


   Chris Sykes
       hyiq.org


tinman

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Re: Joule Thief 101
« Reply #1774 on: April 11, 2016, 02:56:15 PM »
Brad:

Read what I said again:  In your diagram the output waveform shown does not match the physical setup shown.

You are not going to invent your own reality here.  You made a mistake so suck it up like a man.

MileHigh

@ all.
I have modified the below diagram to satisfy bub bub.

Brad

MileHigh

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Re: Joule Thief 101
« Reply #1775 on: April 11, 2016, 03:33:45 PM »
@ all.
I have modified the below diagram to satisfy bub bub.

Brad

Here you go bubba, I fixed your double mistake.  Open your eyes.

Work on your bloody communication skills.

wattsup

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    • Spin Conveyance Theory - For a New Perspective...
Re: Joule Thief 101
« Reply #1776 on: April 11, 2016, 03:38:26 PM »
@all

Another @tinman vid left in the dust while Mr. Faraday retakes the stage. Just not enough time to read the thread and try to respond and the thread just flies a few more pages. Just full of crap. Always the same thing. Well Faraday said this, said that, WTF gives a shit. We are in 2016 and you guys are still stuck in the 1800s hahahahaha. Good luck with that. Sucking on a Faraday Pop is surely not the way to advance to OU.

What Faraday did not explain to you Brainiacs is WHY THE FUCK THERE IS A PHASE CHANGE ILLUSION. But I'll let you guys figure it out with the checkmate "electron flow" model we have inherited you will never explain it just as the same electron flow model cannot explain simple AC. The lack is all tied into the same weakness of this EE construct. But please try as you might. Fit that big box into that tine hole.

So only Mags got even close to providing some "constructive" discourse but his post is way back now and lost in this page by page shuffle of nothingness. Too bad because it had substance and it started to answer @tinmans questions. Started too. There are other points but forget it. His vid is way back now.

Bahhhh. What is the use of trying to talk on these threads. No use at all when guys only want to argue irrelevance.

wattsup


tinman

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Re: Joule Thief 101
« Reply #1777 on: April 11, 2016, 03:54:10 PM »


Brad, I have quoted more than enough references.

If I wanted to fill the bucket with water, what would i have to know prior to filling the bucket with water?

That I need Water and a Bucket.

I would need suficent water, to fill the bucket.

Required Materials and Quantitys to complete a task. Certain relationships are also needed, all items are necessary to be in proximity to each other before completing the task.

It is the Change in Flux (ϕ) that Induces and EMF, but with any Change in Flux (ϕ) an associated EMF is also Present. EG: A moving Magnetic Constitutes an Electric Field...

Each EMF is 180 out of phase. Lenz's Law.

And, as I have also very clearly shown, the Phase relationships are very much dependant on Complex Impedances. Although E2 will be 90 Degrees to the Flux (ϕ), I1 might be 120 Degrees.

I disagree, 90 Degrees is what your Circuit was showing. Its not Predicted. Again, its a Phase relationship, thats necessary, necessary to know, measure in some cases.

This phase relationship can be changed! It can change the system!

This is not a "Predicted" quantity. Its a Required aspect!


   Chris Sykes
       hyiq.org

Ok Chris,i will try and explain where you are going wrong,and why TKs answer is correct,and that it is Faradays law that predicts it.

Quote: Faraday's law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF)—a phenomenon called electromagnetic induction. It is the fundamental operating principle of transformers, inductors, and many types of electrical motors, generators and solenoids.Faraday's law states that the EMF is also given by the rate of change of the magnetic flux:



Now here is what the added Lenz law part says
Quote: Lenz's law, formulated by Heinrich Lenz in 1834, describes "flux through the circuit", and gives the direction of the induced EMF and current resulting from electromagnetic induction.The induced electromotive force in any closed circuit is equal to the negative(your 180* phase relationship) of the time rate of change of the magnetic flux enclosed by the circuit.

So here is where i think you are going wrong with thinking TKs answer is wrong.

Using Faradays law of induction to describe what is happening in the circuit i provided(as TK did),is the correct law to use. The reason for this is,the secondary coil is open,and there is no closed loop or current flow through the secondary that is needed to use Lenz's inclusion in Faradays law of induction.

Faraday's law states that the EMF is also given by the rate of change of the magnetic flux:
Lenz's law describes "flux through the circuit"and gives the direction of the induced EMF and current resulting from electromagnetic induction.

The secondary coil in my schematic is clearly open,and so it is Faradays law of induction that is used to predict the very wave form i showed with the attached scope shot,where the peak of current(top and bottom part of the blue trace),shows the maximum field strength of the magnetic field around L1,but also shows that the magnetic field at that point is not changing in time. When the magnetic field dose not vary/change in time,then that is the very point there will be 0 volts(EMF) across the secondary/L2. I have once again included the scope shot with circuit in question,and show you a vertical line where there is 0 volts across the secondary at the very point where the current /magnetic field peaks--which is where the magnetic field dose not change in time-even  though that time is very brief.

In normal circumstances-using an off the shelf transformer,we would see a 90* phase shift between the current/magnetic field on the primary,and the EMF across the secondary,where the secondary is open. If the secondary has a resistive load placed on it,and now a current flowing through it,then the EMF across that secondary will line up(very close to)the current through that secondary. That is when you will see the 180* phase relationship between the primary EMF and the secondaries EMF--and also the current for the primary and secondary.

So to sum up,as the secondary coil is open on the schematic and scope shot in question, TKs answer is absolutely correct,and using Faradays law of induction in this case is also absolutely correct.

Hope that clears that up.


Brad

tinman

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Re: Joule Thief 101
« Reply #1778 on: April 11, 2016, 03:59:13 PM »
Here you go bubba, I fixed your double mistake.  Open your eyes.

Work on your bloody communication skills.

Work on your own understanding and reading skills MH

To quote my reference to the posted diagram--which had nothing at all to do with any waveform produced by the generator sketch--> thats right MH-->nothing to do with a wave form production.

Quote: --->And if we use a PM generator,the EMF produced from the stator coil will be 0 when the PM is directly at the center of the stator coil's core


Brad

minnie

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Re: Joule Thief 101
« Reply #1779 on: April 11, 2016, 03:59:42 PM »
 
 You can never really trust anything. We've got a new saw,Stihl 4mix, it runs on
 2stroke mix and sounds like a 4stroke....who'd a thought it?

minnie

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Re: Joule Thief 101
« Reply #1780 on: April 11, 2016, 04:05:32 PM »



 A rat got in the pond and drowned. Question is whether the Koala is a duck
 or a rat?
 This whole thing is really most enjoyable.!

tinman

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Re: Joule Thief 101
« Reply #1781 on: April 11, 2016, 04:06:34 PM »

 You can never really trust anything. We've got a new saw,Stihl 4mix, it runs on
 2stroke mix and sounds like a 4stroke....who'd a thought it?

Guess you have never heard of skip beat two strokes,or economizers as there some times referred to.
Ask MH--he's full bottles on ICEs.
Just be careful when the resonant cavity kicks in--it can really throw you around ;)


Brad.

MileHigh

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Re: Joule Thief 101
« Reply #1782 on: April 11, 2016, 04:11:16 PM »
Wattsup:

You have a point about the back and forth arguing in the thread.  That's life and it happens sometimes.  Believe me, sometimes you almost want to pull your hair out when you see two sides of an argument on this forum.

With respect to your moaning and groaning about conventional EE and your "spintronics magic" - deliver some goods.  Do something practical that shows all of this talk has some merit.

Here is a dose of reality for you:  You are the other person along with EMJ that couldn't answer a very simple question about a circuit that consisted of a power supply and one single component.  EMJ has been "doing something" on his bench for about 10 years and I assume that it's roughly the same ballpark for you.  So you have been winding coils, experimenting with coils, talking about coils, watching other people doing experiments with coils, and proposing alternative theories about coils for years and years - and yet you were completely lost just like EMJ and couldn't answer a simple question about a circuit that consisted of a power supply and one single coil.

So I think it's justified to say that and give you some perspective and frankly put you in your place.  The world of EE and the science and physics behind it consists of something like five lifetimes worth of knowledge when you look at the entire body of knowledge.  No single person can know it all.  And here you are a bench tinkerer that has some radical unproven theories that you have been reading somewhere in cyberspace and you probably still don't understand how an inductor truly works, just like EMJunkie doesn't understand how an inductor truly works.

So complain if you want to, but also know that from a different perspective you are a "lost soul."  A "lost soul" just like the lay people that think that Solar Roadways are awesome and expect to see that "technology" deployed on highways.  If you want to show something that backs up your theories that truly is unique and brings value to the table, that would be great.  But don't be surprised if when you do show something that it will feel like a carpet being pulled from up under your feet when some knowledgeable people tell you what is _really_ happening in what you demonstrate, and not what you think is happening.

MileHigh

MileHigh

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Re: Joule Thief 101
« Reply #1783 on: April 11, 2016, 04:14:30 PM »
Work on your own understanding and reading skills MH

To quote my reference to the posted diagram--which had nothing at all to do with any waveform produced by the generator sketch--> thats right MH-->nothing to do with a wave form production.

Quote: --->And if we use a PM generator,the EMF produced from the stator coil will be 0 when the PM is directly at the center of the stator coil's core

Brad

You are the bloody Pope Brad.  Back in brain-fry mode.  Your two diagrams were wrong and could mislead beginners.  And you can't even bring yourself to state that.

MileHigh

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Re: Joule Thief 101
« Reply #1784 on: April 11, 2016, 04:46:49 PM »
PW:

Quote
Yes I do, and I routinely measure at levels well below that most every day.

That's pretty awesome and amazing.  I couldn't imagine how you measure sub-picowatt power levels or why you would even need to do that.  I am guessing that is well below the power levels associated with RF ID tags.

MileHigh