Joule Thief

[Mk1]

@jeanne

I think that you could get better then that , from my design the 2 main 7 turns may make up for the difference in core , also when you go up 13 turns that is the first coil, and down 13 turns second coil they are already in series because they change direction.In my experiments there is nothing connected to the  pickup coils. The number of turns give you the voltage , the bigger wire lets more amps flow.

[Light]

Absolutely agree, TheNOP.
It is a voltage transformer, and the more voltage we got, the less amperage have.
And yes,  bemf’s  part of oscilation here and this’s only way to get amps.

[Pirate88179]

@ All:

Another video showing me lighting 400 LEDs from the modified Fuji AA Joule thief circuit.

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

Bill

[jeanna]

I think that you could get better then that , from my design the 2 main 7 turns may make up for the difference in core ,

But, that is how I made yesterday's coil. It is the one called the mk1. It has the 2, 7 turn primaries. One is on the top and one is on the bottom.

also when you go up 13 turns that is the first coil, and down 13 turns second coil they are already in series because they change direction.In my experiments there is nothing connected to the  pickup coils. The number of turns give you the voltage , the bigger wire lets more amps flow.

Primary made up of:
7 turn at top and at bottom (3 over 4 back) connected in joule thief way.

4 secondary coils:
13 up on left side = 1 coil
13 down on left side = second coil
13 up on right side = 3rd coil
13 down on right side = 4th coil.

If I make them 20 up and 20 down (for a total of 80 turns instead of 52), the final result will be more volts.

Am I getting close yet?



thanks,

jeanna

[Pirate88179]

I have a name for my New Design Joule Thief...I am going to call it The" Joule Pirate".  Available in videos everywhere....well...at least on youtube.

Bill