Joule Thief 101

[EMJunkie]

One thing. Not sure.  Does it matter if the secondary is wound first under the primary or as you have it. Just wondering if the effects would be any different.

Mags

Hey Mags - No Induction is Induction.


   Chris Sykes
       hyiq.org

[EMJunkie]

PW   -   Youre still Clearly missing the entire point of the Debate:



I like this one, it spells out the equation nicely for those that cant grasp simple concepts.

Where:
   e = The Prediction made by Faradays Law of Electromagnetic Induction - How simple is this?


Can you see anything about Phase Angle from Voltage to Current in there?   -   No me either!!

This Equation calculates Phase angle, but it is no where near the other one we saw!!!

COMPLETELY different from The Electromagnetic Induction Equation, now isnt it!!!

Can you read the word coloured in brown text??? Yep, I felt that too, your stomoch just sank PW didnt it!!!

Ref: AC Circuit Complex Impedance, Part 3: Putting It All Together

   Chris Sykes
       hyiq.org

[Magluvin]

Hey Mags - No Induction is Induction.


   Chris Sykes
       hyiq.org

Well consider this..


As Brads coil is basically air core, what if we had a rod core and wound 2 layers of the same turns, 1 layer is the primary and the other is the sec.  The outer winding will have more wire length and resistance than the inner layer, due to greater winding diameter, but lets not think of that right now.

So if we use the inner layer as the sec and apply input to the outer layer, "it is said that the sec will have less interaction with the primary due to most of the sec field would be attracted to the core.' Now I imagine that just the fact that the sec field is affecting the core would be interacting with the primary in a fairly big way, as compared to not loading the sec.

But now if we use the first layer as the primary, and the outer as the sec, I can imagine less of the primary field cutting the outer sec as the primary field of the underlying layer would be attracted to the core and less induction of the outer sec.

Ponder it a bit. Cleaning off bench. Made a little work station for my equip to stack and keep the bench less cluttered. Always seem to need more room.

Mags

[EMJunkie]

Hey Mags - Yeah me too.

I believe youre talking about the Coupling Coefficient (k):

When the coefficient of coupling, k is equal to 1, (unity) such that all the lines of flux of one coil cuts all of the turns of the second coil, that is the two coils are tightly coupled together, the resulting mutual inductance will be equal to the geometric mean of the two individual inductances of the coils.

   Chris Sykes
       hyiq.org

[Magluvin]

Well consider this..


As Brads coil is basically air core, what if we had a rod core and wound 2 layers of the same turns, 1 layer is the primary and the other is the sec.  The outer winding will have more wire length and resistance than the inner layer, due to greater winding diameter, but lets not think of that right now.

So if we use the inner layer as the sec and apply input to the outer layer, "it is said that the sec will have less interaction with the primary due to most of the sec field would be attracted to the core.' Now I imagine that just the fact that the sec field is affecting the core would be interacting with the primary in a fairly big way, as compared to not loading the sec.

But now if we use the first layer as the primary, and the outer as the sec, I can imagine less of the primary field cutting the outer sec as the primary field of the underlying layer would be attracted to the core and less induction of the outer sec.

Ponder it a bit. Cleaning off bench. Made a little work station for my equip to stack and keep the bench less cluttered. Always seem to need more room.

Mags

Now an air core....

Say we have a tesla coil of the kind we see with sparks and all that.  Would it be better to have the primary on the outer dia of the sec, as we see them out there, or might it be better to have the primary inside the sec tube? If not, why?

So just throwing it out there that there may be a better config for brads experiment that may be of benefit to the whole, or possibly not. We need as many positive ways of going about things as they all add up to more positive outcomes. This little thing and that little thing add up to something bigger.  Then we keep those things in our minds as we go along to improve what we are doing. 

Like the idea that if we use 1 coil at say 1w to make the magnet on the spring strip move a particular distance, and then if we add another coil to the other side of the magnet and put it in series with the first coil, and adjust the input so that each coil consumes .5w, total 1w, the magnet moves further.

Why is that?  Same power input, more output.  Like audio speakers. 1 speaker produces 100db at 100w. But 2 similar speakers, 50w each and the output is now 103db.     4 speakers, 25w ea, total of 100w, 106db.  Doesnt seem right does it?  How far can we go with this? 32 speakers, total 100w, 115db.  So if we had some say pancake motors. 1 motor at 750w is 1hp. If we add another pancake motor, shaft to shaft, and wire them in series and adjust the input so each motor consumes 375w, total of 750w, then would the output be more than 1hp?    

Mags