Joule Thief

[IotaYodi]

When putting out the battery does one loose data?

No. The battery just keeps the bios cmos refreshed.
I must be missing something here. A 1000 amps width an aa battery? Anyone want to elaborate on this?

[innovation_station]

No. The battery just keeps the bios cmos refreshed.
I must be missing something here. A 1000 amps width an aa battery? Anyone want to elaborate on this?

be careful!

w

uncle BUILD NEVER got an answer from ... MK1   bout the CONTACT MACHINE ...

HOPE  you didnt think i was kidding...... 

im not! 

lol

; )

http://www.youtube.com/watch?v=ptWnazF7OGU

rideing on a room disipear in the sky never ask questions spred wings and fly ...
sun bath in the suns raize and DREAM 

AS WE BLAZE THIS T V SCEEN 

808  my sky ... ; )

flipsyde!

THE DREAM TEAM  MAKE A WISH!
the dreams teams are made of ... 

             W

THE MAGIC MAKER!

[unzapped]

@ all regarding toroids...

Has anyone tried tape wound toriods or nickel powder? Basically metal banding then encased in plastic...

And just to clarify... The higher permeability the better for the ferrite?

And here is another question I had i could not answer...

He said with the joule thief... you are just stepping up the voltage... what makes the JT different that a regular voltage amplifier?

Who can answer this for me?

Thanks
Jason

[WilbyInebriated]

an interesting thing happened to me while icefishing up on lake of the woods the last few days.
ice fishermen use batteries for all sorts of things while inside the relative comfort of a fishhouse. among the things that need power are fishfinders, radios, fans, pocket led flashlights to shine on your flourescent jig, etc.

while fishing we got a knock on the door, more of a shout through the canvas really, from some of our neighbors out on the ice wondering if we had any batteries as their jig shining light had just died on them. while my buddy was digging some fresh batteries out of his bag for them (minnesota nice) i asked if i could have the 'dead' batteries. the visitor and his friend watched with sort of a mild curiousity as i took each of the three aaa's and tried them out in my jt modded flashlight i was using to shine my jigs with to see which one was stronger. as i compared the strongest of the three to the really dead battery that was in there originally, i decided to use the one i had just gotten from the guy as it was much better. this must have got their attention because they asked about it, why it worked with only one battery and a 'dead' one at that.
i gave a short layman description about how the batteries aren't really 'dead' and how a simple jt circuit can get the most out of them and only require one 'dead' battery. they left intrigued but happy to have new batteries and we returned to slaying the walleye but the conversation remained on the jt and what it could do, what it could run...

a few weeks ago, a conversation about potato/lemon batteries (thanks mr mag!) that triggered a trip down memory lane had given me an idea, an idea that i wasn't ready to try last time i went ice fishing. this time i was prepared to test this idea and felt the timing was right too, my host was intrigued and probably wouldn't mind me sticking a 'water battery' down one of the tip up holes that were drilled outside the fishhouse. i had used a pvc tube, some copper pipe and a zinc rod to make a water battery. with the limited equipment i had (some alligator clips and the water battery) i got a jt circuit to light leds and power a 3v radio from a water battery hanging down a fishing hole. i wish i had brought a flash cam circuit to see if it would run... next time.

if any of you live on or near the water, this water battery might make a good alternative or suppliment to an earth battery setup? i wonder how well this would charge a b-cap? i used a water battery very similar to this although mine wasn't as sealed, i wasn't using rain water and have the unit submerged.
http://www.instructables.com/id/How-to-make-a-powerful-water-battery/

as an aside, we caught fish like mad, limited out on walleye and sauger both days with numerous 25"+ fish caught and released. 24 to 26 feet of water just a bit off of pine island.

[sparks]

  Great questions Unzapped.  People are amazed that you can take a dc current and turn it into highfrequency highvoltage using a highfrequency highvoltage transformation..  You can forget all the winding and the rest of the stuff going on here and just powerup a flyback transformer or ignition coil to get the same effects.  The probelm most people are having here is realizing that they are not imposing the highfrequency highvoltage spikes on a suitable observer.  Someone put it into a xeon tube and reinvented the strobe light circuit.  The jule thief basically prooves that Faraday was correct when he discovered that emf is expotentially generated as a function of the rate of change in the field of interest.  The higher the amplitude of the kick and the shorter the duty cycle the more profound the changes in the amount of energy occupied by a spacetime spot.  Problem being is that as you approach nanosecond discharges of high potentials you are going to get a knock on the door from people who will take your little hobby project away because this type of action is easily detected and the highfrequency bands above xray are contiously monitored.