Joule Thief

[WilbyInebriated]

if you get the voltage high enough, you don't even need bulbs 
this is shrunk and reduced, the full size image is 2.5megs so i couldn't post it here.

[electricme]

@ Mk1
welcome to the thread 

I was very interested to hear you have used parts of a transistor radio transformer and a 2n3055 transistor to get output from a JT.
If you actually got this amount of current out of a jule thief circuit, then this is headding in the right direction. Could it recharge my new Nife cells I wonder?
I would be interested in replicating your JT.
Could you post a circuit please MK1.

@all,
I have been away from this thread for 1 week, my last post was on P38,  within this time there has been enormous activity. we are now up to P61. This forum HAS ALMOST DOUBLED IN 7 DAYS. it took me hours to catch up. Teach me to go away for Christmas, ha ha.
I clicked on the thread when it was at 60 then it went to 61 and I hadn't got to the end.

@jeanna
I noticed you had soldering iron troubles, this got me to thinking, I had better go into town tomorrow and buy a emerg soldering iron, (they are on special) just in case the Israeli - Palestinian thing goes belly up and things like soldering irons get scarce, noticed your reply a few posts back, TA.

@ bill
very nice Christmas lights, some a bit blurry, must be my eyes also ha ha, seriously, this is a very good effort bill.

@all can't thank everyone in person enough for the efforts we have all put in this topic (or 2)
There is such a mine of information here now, I also have learnt so much from ist and jesus and everyone.

Way back at the start I mentioned I found a wind generator prop hub assembly at a local dump, (ex Dunlite). I always wanted to drop by at this chappies place who had a wind generator on a tower, we got to talking over a cuppa, I showed him the prop (dismantled) and he got a dose of the green "I want eyetissssss".  I was offered a set of 20 Nife 300AH cells, (1.2volts at 300 amps per cell) and a set of much smaller capacity nife cells by this solar energy chap, so I gave it (the prop) to him as a thankyou. Bought some costic soda (electrolyte) for the cells this morning, I intend to hook them up to my 1KW deltec UPS.

For those who don't know about Nife cells, they can be flattened right down to nothing, and then recharged with out any bad effects, don't suffer from memory like nicads, are known to last up to even 80 years if looked after correctly. But they take a long time to recharge and if one discharges at 10% current load eg 300AH rating per cell, is 30Amps safe discharge rate, which is heeps for this kiddo.

I saw a Super Joule Thief on U tube by mutwa


Just had a thought, how long would it take a JT to flattern a 1.2v 300amp nife cell? could someone do the calculations please?

See U all next year lol

jim

[nievesoliveras]

@all

I made a mistake on a post and said that the joule thief was resonating, it could be, but what it is doing is oscillating. The transistor with the aid of the resistor and the input from the coil oscillates.

I have four coils I use to experiment building joule thiefs. Only two of them work with a 3904 0r 9014 transistors.
All of them work with a 2n2222 transistor.
That was why I recommended the 2n2222 transistor.

Everybody is happy with their accomplishments. I am happy too and thank everybody for being on this world and sharing your knowledge and friendship.

Jesus

[nievesoliveras]

@all

Happy Holidays!!!

Jesus

[Pirate88179]

Wow, I am busy for one night and look at all of the posts!!!  I don't know where to begin.

@ Jeanna:

Nice job with your camera case for the circuit!  I am like most others on here, when I get done removing the board, there is not much "camera" left, ha ha.  Your instructions are great but, both times, I started out really carefully with a lot of patience....but then....2 minutes into it...the brute force approach took over.  I agree with those that told you your tube should be on without flickering, unless you are using an old tube you had to replace in your home fixture, then it might be a tube problem.  Mine stay constant on and are as bright all the way down the tube, for whatever that's worth.

@ Jim:

Those batteries sound like you could run your house on just a few of them, nice find!


Last night, I experimented briefly attempting to fire a He Ne laser tube I have with the Fuji AA circuit.  It would not go.  I actually have 2 of these tubes.  They are about 2" in dia. and 10" long.  It may take more power to get them going.  I don't have the specs on these, I just have the tubes.  I was hoping to post a picture or two of it working but.......that's the way it goes sometimes.

You know, I really miss being able to scroll down to read at least a few of the previous posts when posting.  The way it is now, it shows only the last one.  My memory is not good enough to remember all of the posts and what I wanted to say to each so, I will have to go back over them later and post again.

I do agree with Jim that there has been some excellent work done here and I too have learned plenty.  Although, I have not learned how not to get zapped by my board.  It got me again last night fooling around with the laser tube!

I thank everyone for their participation and contributions to this topic.  A week ago or so, I could light 1 led, and now, 300.  Geeze, where will we be next week?

Now that we have many others playing with the Fuji circuits out there, there is no telling what we will see.  Take care everyone.

Bill