Joule Thief 101

[picowatt]

PW - You and TK are wrong!!!

Oh really?

Both TK and Tinman stated the correct scope capture was the one showing 90 degrees of phase shift.

You have now changed your answer to be in step with theirs, so it seems that all of you are now in agreement that the correct answer to Tinman's question regarding which of the two scope captures was correct is the one showing the 90 degree phase shift.



So what's the problem?

[EMJunkie]

PW - Youre still Wrong, and still wont admit to it.

You see, Brads circuit was never in question. Its TKs explanation of it.

Which you seem to support. Emphatically, with no evidence at all to show other wise.

   Chris Sykes
       hyiq.org

[EMJunkie]

You see PW, when youre wrong, and know it, you really should admit to it!


   Chris Sykes
       hyiq.org

[EMJunkie]

Not admitting to it, really isnt a good show of your character.


   Chris Sykes
       hyiq.org

[shylo]

 "Then there is the magnetic fields to consider-both the PMs field,and the primary coils field. The PMs field remains the same polarity,but varies in time- where the primary coil is the view point. The primaries magnetic field however,alternates in polarity over each cycle. We now have an effect where the two fields will be in bucking mode through 1/2 of each cycle,and in attraction mode during the other half of the cycle,and yet we see no such distortion in the secondaries wave form,where one half of he secondaries wave form should increase due to the bucking fields strength increase,and the other half of the secondaries wave form should decrease,due to the two attracting fields of the other half of the cycle. But in stead,we see an increase on both 1/2 cycles on the secondary,but a decrease in the primaries current draw-even though the primary coil is now doing more work."
Hi Tinman,  Thanks for that video, I don't know much about this stuff and was impressed how drastically the inductance can be changed.
My thinking is that by adding the magnet stand, when the poles are attracting the approaching magnet is adding to the secondary, when the poles are repelling the field of the primary is being compressed back towards itself thereby increasing the secondary also . So that to me is why both halves of the cycle have an adding effect.
I would have like to seen what would have happened if you inserted the big block with the magnet stand in place.
Great work artv