Joule Thief

[electricme]

@ Gadgetmall,
Congradulations  with achieving recognition for your circuits, thats wonderful.

Mabe Stefan will give you a special icon to put next to your name, ha ha, well you deserve it Al

You do excellent work on our thread and fit in very well indeed.


Ps, I just took this TWV of fthe TV, it's a rocking chair powered by a V8 engine, sorry about the audio

Hooroo

General Jim

[electricme]

@ Flathunter,
Welcome to the JT forum,
Try any combination

@ Ist,
could you post a photo of that tiny supercap you found inside that VCR, then I will dive into my VCR stash pile and take a look see.

@ MrMag,
Sorry to hear you needed knee surgery, hope you are on the mend
Yep, all the posts, ha ha, it comes with the territory, I discovered this much earlier in the forum days, they do tend to creep up on one.
I panicked a bit during last weekend as I hadnt read any for 3 days, man there was a lot to catch on, still is today.

@ Bill,
Good find experiment about the LED in a see through rope, try taking one LED out of 1 end and look into it, it should be producing light.

You have made up half of an opto coupler if you add a light sensitive transister to the other end, you should be able to send a "signal" through a plastic water pipe.

@ Gadget,
a 103 is a pico farad, it is a ceramic capacitor, they can be tiny round brown flat things, a Tantalum, or a flat square thingie.

General Jim
 

[electricme]

@ Bill,
This is an experiment I just did, because you posted the experiment using a tube coil.

I setup a wine glass, filled with water, using the JT as a power source, I shone the light through the side of the wine glass.

The light went through the wine glass, water and all, and projected a image of the wine glass onto the side of the battery, it didnt end there.
I moved the LED away from the wine glass, and the image got smaller and smaller.
Is this the first time this experiment has been done?

To see the path the LED light travels through water, shine the light through the glass, and look downwards into the glass, you can see how it is corrolated, "laser beam wize" if I addded any impurity to the water it would become more prominent no doubt.

Thanks Bill, I learnt something new because of your experiment today.

Photo0452.jpg = Wine glass experiment setup in light.
         0453.jpg = Lights out, LED held directly against side of wine glass, image fills whole of screen (its my big battery)
         0544.jpg = LED moved slightly away from side of wine glass, image gets smaller.
         0545.jpg = Tiny image of wine glass on screen, and much brighter.
         0546.jpg = LED light beam (very faint) but it shows you it is a tight cone of light, a bit like a lighthouse beam.


Just had a shock, nearly walked into a redback spider, he was a biggie, about 2 1/"2 across, well hidden he was at shin high, a sixth sence warned me something wasnt right so I gat a torch, he was on my stand by battery bank verrandah, I changed his diet to poisen, now I'm happy.

Gonna make a cuppa tea, close one this time.



TA
General Jim

[electricme]

@Ist,
VCR capstan electric motor,
Yep, good find this one, there are many poles and coils on the stator, I wonder if we can turn this into a small wind generator, must do some tests on one tomorrow.

General Jim

[Koen1]

hi all

So we've started placing our leds inside transparent housing for added effect?
Well I suppose we could get some neat effects... but none that aren't sold as non-JT versions yet.
Still, some nice looking twinkle in a light tube powered off a dead battery remains impressive.

By the way, still nobody else who is bothered by the high pitched sound emitted by
some transformers on the camera boards?
I sure hope the JTs I'll be winding on the ring cores I ordered don't make that noise...
... it drives me nuts to have that thing beeeeeeeeeep all the time. Good thing I've
got modded camera board that don't scream defiance at me all the time, I'm using those
for my JT games now.

@IST: you wrote

there is much more to the crystals in this set up then   shattering the light

tip

i hear blue leds activate the crystals  and the crystals release full spectrum   

ist 

also for some reason blue is only required   this was more of a grow food thing  the crystals ..

Can you please tell me some more about these mysterious crystals you're talking about?
What crystals are you referring to? Do you have a link or a term I can google for?
thanks!

I was thinking, we could use a transparent plastic tube with water in it, and put some luminescent
powder in the water, then use one (or more) UV LEDs to make the powder glow brightly... ?
Sort of like the poor mans DIY fluorescent tube, but instead of a phosphorescent coating
on the inside of the tube we use "glow-in-the-dark" powder and instead of pulse ionising
a mercury vapour that feeds energy to the phosphorescent material, we'd simply use our
JT-powered LEDs...
Ok, I admit I have not considered absorption of the UV by the water nor related ionisation
effects, but I do have a little of such glow powder hidden away somewhere and I also have
a couple of UV LEDs (somewhere around here) so I think I may just try it sometime soon.

You also said, in a later post:

so you are useing the entire cam curcuit gadget......    hummmmmmm

no wonder ...  lol

i only was useing the transfiormer ....   no doubt you can light cfls so bright ... unless i missunderstand you

you are useing BOTH TRANSFORMERS......  LOL

Now I've only toyed with my 3 modified camera citcuit "Joule Thief"s so far, lit various numbers and types
of LEDs as well as fluorescent tubes, but have not built one from scratch yet (still awaiting my ring cores,
thinking of cannibalising an old and quite large transformer from an old switchboard now, it's just taking too long)...
... but my camera circuits only have one transformer on them...
And the pics I saw of the camera circuits on Jose's website as well as the pics I've seen from others also show
the same circuit and pcb as I have, with one transformer on it.

What camera board are you referring to that has two of them?
Or are you perhaps talking about using two camera board in tandem??

By the way, that's one freaky looking coil ring setup you pulled from those vcrs!
Can you use it in the same way as the ring of JTs you posted like 20 pages ago?