Joule Thief

[gadgetmall]

Jeanna:

I just ordered four 3 3/8" dia. ferrite toroids from all electronics.  I am going to try to replicate Lidmotor's Jeanna Light. (Using your big toroid winding idea) I was thinking about stacking 2 of them together and winding just as if it was one thick one.  What do you think?  have you seen Lidmotor's second video of the light where he put it into a very nice box?  He is getting 10 watts of light with only .3 watts of power input.  This is a very beautiful and special project that I would recommend to anyone.  I may need some help on the winding.  I also ordered some 5 watt wire wound pots as well.

Here is the link to Lidmotor's video in case anyone missed it:

http://www.youtube.com/watch?v=11nzbi59T7w&feature=subtivity


Bill

This Is awesome Jeanna . Where did i miss this Bill ? ?jeanna? i have some of those rings . Cool

[resonanceman]

Hi gary . nichrome  wire is the way to go here . then you can control the resistance and amount of heat Verse time . I used a small piece of coil and it lit up like a light bulb . i could feel the heat on my face . IF i put say 5 or 6 feet of wire coil then the heat will be slower  and there for could last for hours . Also If one Jt charges in 8 hours Stands to reason that 8 Jts will charge it in one hour . and 16 Jts will charge it in a few minutes . IST already has the makings in mind for something similar and he will see results . I believe the big 6 inch toroid will charge this Bcap up quickly once we find the proper winding . probably using a 2n3055 or bigger transistor .
Gadget

Gadget

I would agree that only ultracaps  have shown promise  with this .......so far .
I see  no reason  that some other can't work .


I do understand the idea  of  more  units to provide more power .......but each  unit costs money .

I  do not  like bottlenecks   in the  OU path ........ toroids are a bottleneck ......... the price tag on  ultracaps  is a bottleneck 
I would say ......somehow  the ultracaps are loosing less through leakage  or something like that .
I  will  see what I can do with the Ultracaps .........but I will also  be looking for other options ....options  more possible  for  the person  without  a  gold plated  checkbook.





As  far  as  using the 2n3055 ........ I used them for a while  ........they burn out to easy.
Try the TIP3055  .............similar  performance , smaller package and  they seem alot more durable to me.

gary

[Pirate88179]

The TIP 3055 is what Lidmotor used in his Jeanna Light circuit.  I am going to use the old 2n3055 for my replications if only because I still have about 25 of them left from a buy I made last year.

Bill

[jeanna]

Wow lotsa posts to answer.

1- I think MK1 has a good idea here. It is a good idea to make some prepared explanations of what we have learned. It is better now than before, too because we all seem to arrived at a place of greater understanding.

2-@Bill, In fact it should be much stronger, (remembering prof lewin's long plastic bag?) and I have been thinking about it too.
But, let me suggest a simple replication first.
That way I or lidmotor can help you.

3-@Gadget, It was around jume 11. I was not the first to light a fluoro tube with a hand wound toroid, but I wanted to keep it really simple (and I did) and I timed it (5 1/4hrs) to show what a great build it could be.
I put it into a long breadbasket, but it didn't fit and Lidmotor's lamp is just so elegant and beautiful. I feel so proud that I inspired him.

jeanna

[gadgetmall]

Gadget

I would agree that only ultracaps  have shown promise  with this .......so far .
I see  no reason  that some other can't work .


I do understand the idea  of  more  units to provide more power .......but each  unit costs money .

I  do not  like bottlenecks   in the  OU path ........ toroids are a bottleneck ......... the price tag on  ultracaps  is a bottleneck 
I would say ......somehow  the ultracaps are loosing less through leakage  or something like that .
I  will  see what I can do with the Ultracaps .........but I will also  be looking for other options ....options  more possible  for  the person  without  a  gold plated  checkbook.





As  far  as  using the 2n3055 ........ I used them for a while  ........they burn out to easy.
Try the TIP3055  .............similar  performance , smaller package and  they seem alot more durable to me.

gary

I am by no means rich . Neither is IST . We save junk . and for me i try to give materials that i have researched for less money . And like i said in a posta few pages back you can get all the parts you want for free . I got all those parts in the photo for free . the torroids are 5 for a dollar . wire free . transistors free resistors free and pots are free and so are the torroids .
Yes by all means research the little caps . I ran Experiment 3 again and same results with the 4.7 farad supercaps . In my standard Jt they don't work at all for showing anysign of OU but i do have a little cube light that runs off one for over 24 hours  and charged by the sun for a few minutes or by a lamp for a few minutes and that supercap maxes out . I think this can be made better with lots more turns on the primary . As far as the secondary these is no current to charge the Bcap or from previous test . I am sure we can figure thisout .. I tried already with the setup before i started experiment 1 . it don't budge  an ultracap  with diodes in series . without them the coil smokes . So for now i will work on the the worlds most efficient aa battery heater /light . I hope others see their way to replicate and make it stronger .
Gadget