Joule Thief

[innovation_station]

i found this to be great ...

thanks to janne808 for posting it ..... 

http://www.youtube.com/watch?v=G3eI4SVDyME

this answers ALL TPU IRON CORE operations 

induction .... 

JUST WATCH IT...
JUST BUILD IT! ...

IST!

in this video ...  you see by adding more turns you increase the current flow ...  from a changing electro magic feild...

awesome video janne808!!

[jeanna]

Thank you, ist.

thank you janne808

lots to go on here.

jeanna

[resonanceman]

Rave

I  have been thinking of  building  your  version of  the  555  circuit

I have a question about the  green line .
Is  it  just another  wire ?
IDoes this  circuit require reset to be connected with B+ ?


This circuit is  a little more complex than some of the others  but I like the mark/space   adjustemnt
It seems to me  that is important  if you want to get the highest  efficiency .... just adjust  for the narrowest  pulses that  will  get the job  done .

gary

Never mind

I found  my answer after  3 days of looking

It  turns  out that  most of the information  on  building   PWMs    is either  buried in  hundreds of pages of  posts  or  in videos .

My connection  is  to slow for  videos .... So  I guess  I am  pretty much locked out of the loop

Same  thing  with this  thread .
All the new findings have been  going into  videos .
That might  be  great for some .......but for me it sucks


Can  anyone here  believe that no one that has  visited this thread   has any experience    buildinig  a PWM ?
Yet   my question  went unanswered .



I guess I am just  tired of wasting my time here 
The  time  I spend waiting for   posts or getting timed out  could be spent  much more constructively

I may  be  back   If I  get something   new going .
For now  I am out of here .



gary 

[Cap-Z-ro]

I always follow your progress as well as others gary.

Please reconsider, you continually contribute some interesting and thought provoking ideas.

You just have to roll with the wheels you have in life's race...sometimes we forget, we're in a marathon and not a sprint.

Regards...

[Mk1]

@all

I will show you a experiment i conducted a while back, first its a 2 jt toroid , it also has radial coils one on the outer side 5 turns , and one 5 turns on the inside.

You can see all coils in the first picture, total 6 plus a control pickup coil of 5 turns for testing voltage .

The two jt are connected differently one with the positive rail connected north and the other est and west.

On the second picture you see the 2 jt with light working together it (without led 19 volt on the pickup coil) . Third and forth picture shows that removing one of the transistor doesn't change the led operation (btw the pickup coil with one transistor and no led show 22 volts)

There is also the radial coils on the outer one nothing , but gives 4 volts on the inside one , and lights a led only if there are none one the basic jt.

There are many things to be learned from this experiment ...

Mark

And space cat Miton says hi !