Joule Thief

[innovation_station]

yes agin mr.m i do agree..

i did a test useing an ac adaptor made a video it is up loading now ...

in this video ... you see the exact same thing as you just explained but in reverse  i get a dc ripple + and -

william

ill add the link  it apears you tube didnt like it ...  says it failed after a long time ... hummm

trying the upload agin ..  hope it works this time ..

i agree J 

there is soooo much to this .. i cant begin to explain it all this is where everyone else fits   : )

ist!

http://www.youtube.com/watch?v=9PurY5lXOhc

[xee2]

@ jeanna

I have seen different inductances work differently on various toroids. I suspect this is because of the "A" or possibly  the "r" in the formula for L.

Yes, there is more to it. But, inductance is the major factor. I am looking forward to your test results.

[jeanna]

Hi everybody,

Still no toroids today.

I took a few pix of my new 19 led bulb which is a self contained bulb with joule thief and battery run through the power plug. The power plug is taped to the stem of the lamp and sort of hard to see, but maybe you can magnify it enough to see.
It is obviously not finished. I looked some more today to find a switching unit or a way to connect the battery so it can easily be moved from the 110v wall plug to this JTC enclosed bulb when the lights go out.

It is adequate light although not super bright bright but here are 2 pix. Notice the 2 cones of light above and below the shade.

jeanna

[gadgetmall]

Cool Light . Very nice . where did you buy the 19 Straw hat led bulb and it look like the warm white  colored ones . I have one 1 watt straw hat that is warm colored and its a golden light compared to 1 watt pure white  strawhats  I have about a hundred of those  and they are blinding 140 degree 220,000mcd s  just curious who sells them local .mine came from china   Big toroid is ZW49740 140mm lighting off the Base collector and the emitter collector and the secondary at the same time http://www.overunity.com/index.php?topic=8334.msg214131#msg214131

[jeanna]

This is a bulb anyone can get, which is why I chose it. People are hard pressed to follow us, but they will not make their own if they have to put together all the leds... I am sure of that. So, I look for convenient things like this to make it easy to go somewhere from our research.

LOA .
19 leds come in cool brighter white and also in this warm color, which I like a lot even if it isn't as bright.
It isn't called 19 leds or strawhat. I just knew that from here.
I took a pic of the 2 labels so you can find this.


jeanna