Joule Thief 101

[minnie]

  The tinman knows that I haven't got a clue
  and I know the tinman hasn't got a clue.
       John.

[shylo]

 
     (http://overunity.com/Themes/default/images/post/xx.gif)   Re: Joule Thief 101  « Reply #1876 on: April 12, 2016, 10:51:30 PM »  Quote
   Hope I get you before, Get rid of the stopper block and let it rotate. Stopping the magnet like that changes everything.
I think that you have to bounce it back and forth.
Thanks for the video , To me it shows only a quarter of the wave?
artv

Tinman, I want to apologize for this post ,I made it without viewing the whole video. I was interrupted by a surprise visit from the grand kids.
Thank-you for the demo it seems the most drastic change occurs just between in front of TDC and just after.
My current setup is 2 horizontal magnet rotors spaced apart to allow me to insert a coil. Also when the coil is in place the lower rotor has a north pole magnet centered on one side of the coil, while the upper rotor is a north pole centered over the other side of the coil.(eliminates the drag effect)
Do you think this will still be the same wave form?
Thanks artv

 

[tinman]

You are going to play the wrong again game again when you are wrong again?



But when you look at the secondary output of the transformer as compared to the primary current when the primary current is a sinusoidal waveform, then the secondary signal is not displaced in time.  If the primary current waveform is a sine wave then the secondary voltage waveform will be an instantaneous cosine wave.  They are not displaced in time at all, they are just different waveforms where it is convenient to say that they are "phase shifted" relative to each other.

All that I am saying is that there are two meanings for "and say that I am "wrong again."   Between the two postings I made about this topic I suggest that you reread both of them enough times so that it sinks in and you understand what I am saying.
MileHigh

but like the brutal abrasive wanker you are, you have another good wank

Well i can see that you did not agree to Bills request to stop with the vulgarity--you really are a disgusting old man. You really do turn into something else when you are wrong.

Yes indeed, a signal can truly be phase shifted and truly displaced in time by things like delay lines and other stuff.  In the digital domain it can be done with shift registers.  In the ancient computer days it was done with a long horizontal tube half-filled with mercury.  Or if the same signal travels through one meter of coax and 20 kilometers of coax, then there will be a phase shift between the two signals where they are truly displaced in time relative to one another.

This is what i mean--your limited understanding regarding phase,and what it is.
There dose not have to be an overall time difference for each cycle for one thing to be out of phase with another. You need to go back to basics MH--perhaps review two children swinging on two swings of the same kind,but where one child starts swinging first,and the second starts when the first has reached the point of 1/2 a cycle. The child that started his swing first will always be say 2 seconds in front,and there phase can be said to be 180* out,but where there cycle time is still the same for each cycle. When the first child stops swinging at his starting point,the second child will not reach that point for another two second,but still there cycle were  exactly the same.

You say there is no time difference,and so there is no real phase shift--well that is just plain wrong--incorrect MH--try again.

P.S--Is minnie your son?--just asking


Brad

[tinman]

  The tinman knows that I haven't got a clue
 
       John.

The tinman knows that I haven't got a clue

This much is true.

and I know the tinman hasn't got a clue.

Lol-again minnie
All you have to do now,is find something in this thread that i was wrong about.
As you have admitted to not having a clue,how will you know i was wrong when you find it?.
No point in asking daddy(MH),as he has got almost everything wrong in this thread--he even managed to balls up his resonant wine glass fiasco that we all waited 4 to 8 weeks for
I was actually expecting something good,but it was a big let down when i read his answer's,and it seems so for most everyone else here on this thread.

It's all good to say some one dosnt have a clue,but you have to back up your claim--as i have with MHs mistakes in this thread.


Brad

[tinman]

     (http://overunity.com/Themes/default/images/post/xx.gif)   Re: Joule Thief 101  « Reply #1876 on: April 12, 2016, 10:51:30 PM »  Quote
   Hope I get you before, Get rid of the stopper block and let it rotate. Stopping the magnet like that changes everything.
I think that you have to bounce it back and forth.
Thanks for the video , To me it shows only a quarter of the wave?
artv




Thanks artv

Tinman, I want to apologize for this post ,I made it without viewing the whole video. I was interrupted by a surprise visit from the grand kids.

All good Shylo--i have many grand kids of my own lol.

Thank-you for the demo it seems the most drastic change occurs just between in front of TDC and just after.

With a single magnet like in the setup,where the field is very concentrated ,then yes,we will see very sharp rises and falls in the wave form. If we have a rotor with nice wide fields with even transitions,then we will get a nice AC wave form.

My current setup is 2 horizontal magnet rotors spaced apart to allow me to insert a coil. Also when the coil is in place the lower rotor has a north pole magnet centered on one side of the coil, while the upper rotor is a north pole centered over the other side of the coil.(eliminates the drag effect)
Do you think this will still be the same wave form?

If your coil is nice and evenly wound,and your magnets are of the same size and strength,and pass the coil at the same speed and at the same distance away from the coil,then there will be no wave form --no EMF will be produced across the coil.


Brad