Joule Thief

[Mk1]

@all

I heard that a mobius coil could hide the load , humm ,it needs some testing .

Both are made of a single wire.

[jeanna]

Thanks Gary.

MK1
Please complete your drawing. Where are the connections?

@Free,
yup, same for me. but I was corrected, so I cannot help you unless you can get the AA circuit.

Well, on that AAA circuit, I was able to light a 8 watt tube with my hand on it.
Have you tried to put a magnet onto the metal end of the tube?

I also think the cfl twisted bulb types are harder to start. I have not started one of them yet even with a magnet...
corse, there is not a metal end on them either.

The ones to help you (and me) are gadgetmall and Altrez.

jeanna

[Artic_Knight]

Jeanna

My  original picture  was with  2 AAs

I  am  posting  a picture  with it running with  only one AA

In this picture  it is  running around  .12A   
The  output voltage across the LED array is  22.4
It is not  quite as bright as  with  2 batterys  but it is close .

The picture  is  with no tank circuit .
I tried  a few  different   caps .... the performance  didn;t  change much   until  I  tried  a really big cap .......a  5 uF  run cap     it  gained  almost half a volt  and the  current  dropped to .08A
The  problem  with this   setup  is with the  big cap  the  sweet spot is  VERY tight . ....... without the cap the sweet spot is  pretty  wide .
With  2 batterys it is very wide .

I  am not noticing  near as much  benifit   from the  Jesus  charger  with this  setup    I am only  getting about  .02 V more when I connect it .
I think  it does  better with a higher load .

hope this  answers your questions


gary

ive given this some thought and i think the fact that the wires in cat5 are twisted may be playing a significant role in why this setup is working so well. i would think that with this setup the coil is too large to be creating a magnetic field perse but with the wires twisted on themselfs several times it would seem this would provide a good channel. ... interesting setup indeed.

[nievesoliveras]

this curcuit looks like it would not bee a good recovery curcuit. now i cant say this for sure as having a cap in parallel with resistors doesnt seem to do anything useful but somehow it does help. but the caps will be inclined to discharge to themselfs through the diodes. if it does work as intended chances are it will not be very effecient. perhaps if the diodes were higher voltage than what was expected to be captured? that should be suitable for something like that i would think.

i havent looked for anything yet but there must be a good recapture curcuit around here some where. ill let you know if i see one

Thank you @articknight !
I will make a search for recapture circuit.

Jesus

[jeanna]

@Free,
Here is a link to a fuzzy picture I took which shows the difference in the outside appearance of the fuji cams.

http://www.overunity.com/index.php?topic=6123.520
I posted that on
December 28, 2008 and it is

reply #521

Have a look at the photo before you go to the store.
This is the best reason to get one that has already been used. You can see what it is!

good luck.

jeanna