Joule Thief

[Artic_Knight]

explain to me how you can collect eddy current at the output terminals when that current is in the housing.

i am not saying that the effect you are writing about is not real, far from that.
i am simply saying that eddy currents is not the cause.

to really know what is happening, when there is a capacitor at the output, you should look at Lenz's law instead.



i am curious on exactly how you allow the electricity to flow in your pipe experiment.

eddy currents is a special case of induced currents, it circulate in a conductive material and loop on itself.

the rest is said to be an induced current.
same word "current" as if it was comming from a battery because that current is not different if it is induced by a mag field or by a battery.

well your right electricity is the same no matter if its battery or generator. to understand how you eliminate eddies from a dc generator (its possible but more complicated for ac) you first have to see eddies in action.  eddie currents is the current generated my a magnet crossing copper and inducing a electric field that is not properly grounded or allowed to excape. eddies are thereby rellative to the resistance of electrical flow.  if electricity had NO resistance there would be no eddies, if there is NO electrical flow there is max eddies. by placing a cap in direct contact of the generator output and having that cap be of a large enough capacity to properly obsorb and smooth out all the currents supplied by the generator you are essentially eliminating a large resistance because now the curcuit board IE charger component is not in the way slowing the flow.

with the copper tube experiment take a neo magnet (preferably the stronger the better) and drop it down a copper plumbing pipe. it will fall really slow. now attatch a electrode from one end of that pipe to a lightbulb (florecent was demonstrated) and connect the other end of the pipe to the other end of the bulb or other load. now you will see the magnet fall at a normal rate because it is able to better dispose of the electrostatic field built up in the conductor.

[jeanna]

@ jeanna

"VCE(sat) = 1.1 Vdc (Max) @ IC = 4 Adc "

Means that it takes less than 1.1 volts between base and emitter to turn transistor on as much as it can go (called saturation).

You should only need a 100 ohm base resistor to light the fluorescent tube. No caps or diodes should be required. If by some chance that doesn't work use a 50 ohm base resistor.

Thanks, xee

As always you provide great info.
I will get to this setup today.

@stprue
Thanks for the encouragement too.

OK I will report, of course. Maybe today or tomorrow. This seems to be a busy week. I better start now.

Thanks Bill, I couldn't get the neon fromm my radio shack last year. I have been asking them for things and they are actually stocking stuff so I can pick up an odd resistor or cap... this was a local find.

@AK
From time to time people like to make suggestion about where this thread should be aiming.
If you do it yourself and report it and have questions then the thread WILL go in that direction at least as much as you are doing it.

The magic of this group has a lot to do with the self direction from the members. We are following our creative bliss.

Now for mine! 

jeanna

[jeanna]

jeanna is there a resistor or ferrite inductor...

to eliminate HF currents! if one of these found its way on the led string it would essentially be a killer for lighting them. resistors and other items could have a similiar effect.

Maybe, but I can only see wires. The label says it is a series string and the lamps cannot be changed.
With 70 lamps= leds, this is probably a pair of strings in parallel. I know to keep the string from frying there is probably a resistor, but if it can light from the wall shouldn't I be able to light it with my jt?
I will look closely now, thanks for the heads-up.  I don't see the thickness in the wire that usually means a ferrite hf protector.

Thanks,

jeanna

[Artic_Knight]

That is a great document!  I recomend everyone to read it as it only takes a minute or 2 or3.

@Artic_Knight

What do you think the shape of this would be?  Air coil...humm maybe you could wind around a hollow plastic core.  Thick wire underneath going around the air core (maybe not all the way around, maybe just a few turns) and then thin wire going over everything??? (maybe not the few turns?)  Well time to start experimenting!

well tesla used his pancake bifiliar coil as the primary on the air coil and it was in a cone shape. what i plan to do for my air cores is to take a tube of sorts (non conducting either cardboard or plastic) wind a fine wire till i cant stand it any more. 1 layer thick down the core. then with a ticker wire wrap a bifiliar 5 turns down in the center of the thin coil by center i mean from tip to tip put it in the middle. after connecting the ends like tesla did you should get 5 turns down then it returns to start and another 5 turns down.

i had the same coil design posted in a pic form a few pages previous. (probobly 50 pages by now)

[xee2]

Neon bulb lit with only one wire.