Joule Thief

[xee2]

@ TheNOP

but, to me, your first statement is somewhat contradicting your resistor example.
i would say : it can support up to ~4 watts without degrading too fast or blow up.

That is why I said you need to play the game of "what in the world do they mean by that" because it can mean different things.

[xee2]

I think this is correct.

[jeanna]

@xee,
As I understand this to call a lightbulb 4 watts means that at 120 volts it draws 33.4mA and so V x A= W therefore 4 watts.

With leds it is different.
Some of them are rated for turn on and some are rated for best brightness I don't think any are rated for burn out, but maybe some are.
That is the reason it is so hard to compare led turn ons.

But standard 120 volt 60Hz bulbs?

It may answer the question I have about why some can get a light to turn on and others cannot. My 7 watt fluorotube was harder for the fuji to turn on than my 15watt fluorotube, so this fits some of my experience, but in this world of ultra-standardization, I am surprised.

And, I am sorry to think I have to play that game.

jeanna

[Pirate88179]

@ Pirate88179

Your EB is just like any other battery except you made it yourself. It gets its energy from the electrodes which are used up in the process of generating voltage.

This is not true at all.  There is an EE on my youube videos saying the same thing.  He also says I need water for the electrolyte for the reaction.  I told him my best readings are in totally dry soil and he says that is impossible.  The electrodes do NOT get used up in this configuration.  For those that don't know about how an earth battery works I suggest reading the research done by us on those two earth battery topics.  Through our experimentation we proved it is not galvanic and the electrodes do not deteriorate at all.  You can light an led with 2 copper pipes cut from the same tube if you get the spacing and alignment correct.  How can you have a glavanic reaction with 2 similar metals?  I asked this EE this and he said you can't get any volts from 2 copper pipes.  I have done it and seen it and he has not.

Please read the research done on the earth batteries before making definitive statements about them that are not correct.  Don't take our word for it, make one yourself and see, then you will know.  Thanks.

Bill

[xee2]

Q jeanna

As I understand this to call a lightbulb 4 watts means that at 120 volts it draws 33.4mA and so V x A= W therefore 4 watts.

Yes. But it will only be 4 watts if both 120 volts and 33 ma are available. If 120 volts is available but only 10 ma is available, then the tube will only be using 120 X 0.01 = 1.2 watts. In the JT the output can have 120 volts but not also 30 ma and so it can not light the tube to its full brightness.

Actually, in the JT we are not using the tube the same as if it were in a light fixture. We are using it more like a neon tube.