Joule Thief

[jeanna]

@Bill,
Did you ever get close enough to see a glow with your experiments?
How high was the voltage?

@Stprue
I can see how that can be done looking like x2.
[but the x2 must be split and made in 2 parts at 90 degrees from each other.]
and it needs 2 wires which means 4 ends. BUT, what if you connected the beginning of one to the end of the other and used this as a substitute for your bifilar primary?
If you create the rotating mag field, which is what that patent was about, then the secondary of almost any configuration should reflect this.

I may try it with a real toroid, or maybe just continue the discussion with a pic of one made on that bad blue. [At least it is photogenic  even if it can't do any real work! beautiful but dumb... 'dumb blue'  ]

@Gary,
Thank you. I think this is useful information for us.
EDIT

HHhhhmmmm

Doesn't this  coil look  like  2  JT  primarys wound on the same  toroid?
It is  a little beyond me .......but could  someone  set  up 2 JTs  to  work  kind  of  like  a push pull  amp ?

This is exactly what I meant. You posted while I was typing.

jeanna

[stprue]

HHhhhmmmm

Doesn't this  coil look  like  2  JT  primarys wound on the same  toroid?
It is  a little beyond me .......but could  someone  set  up 2 JTs  to  work  kind  of  like  a push pull  amp ?

I am not  very  good at  seeing  what  direction  the magneitc fields  will go or what  direction the curretent will flow .
If the coil was set up   as 2 JTs   would  the  output  from one  be positive feedback for the other ?

If  it  can  ge wired for  positive  feedback  it may  end up being   a simple  TPU


gary

That's my impression of this as well 2 JT on 1 coil creating a spinning field and boosting performance.

[stprue]

@Jeanna

Please try to build this as my idea is a little different so we could rule out the wrong way to build this quickly...Ihave a feeling the right way would be worth the effort

[resonanceman]

@Bill,
Did you ever get close enough to see a glow with your experiments?
How high was the voltage?

Jeanna



I  think   a way to  get  a regular  lightbulb to work may be to  make  a  stong high voltage  JT  then  step  it down to lower voltage .....kind of like what people  were  suggesting  I  do by feeding my MOT JT into  another  MOT
My MOT  JT was not powerfull enough  ....the second   MOT choked it .

I do not think  it really matters  how much  voltage   you have  with  a regular bulb ........what matters is the current .

@Gary,
Thank you. I think this is useful information for us.
EDITThis is exactly what I meant. You posted while I was typing.

jeanna

Type faster next time     

gary

[resonanceman]

That's my impression of this as well 2 JT on 1 coil creating a spinning field and boosting performance.

Stprue

Great   

We might have something here .

I think  IST and MK are the  "experts " at  visualising  the  magnetic  fields  and current flows ...........maybe  they can answer my  question about   posative  feedback

I am thinking  if the JTs  have posative feedback  they  will keep each other in sync.


gary