Joule Thief

[electricme]

@Jeanna,
If you get borred watching how long the fluro will stay litup, do this.

@Gadget
and anyone else who wants to to answer it,

Since we are not using watts to heat the fluoro tube, and we are stimulating the phosphorescence of the tube to react to the 450 volts at over ??kHz, then what is causing the difficulty in getting the longer ones to light up?

I am not saying it even is more difficult. I have only 2 tubes, a 7w and a 15w and if I can light the 7w I can also light the 15w.
Either one lights at less than full mains brilliance, and the bigger one casts more light than the smaller one. So the total light from the bigger one is more than from the smaller.

These are subjective observations, of course.

So, I guess, I should be asking this Q? first.
Is it true that it is harder to light a bigger tube than it is to light a smaller one?

The next Q? is ...what is the limit?

next Q? How much of what elements are needed to light the tube? (xee has said that 450volts is the minimum, and I think he is correct. Now, is there also a frequency minimum? and then, is there a combination minimum?

I decided to time the tube today, because I will be around later this evening to watch how long the AA can keep it on.

thank you,

jeanna

Get a small 4" 6" fluro tube, put it in a glass half filled with water.
Put it in the microwave for 10 seconds on half power.
Press start, and watch it light up. On Hi power, you need sunnies.

OK, how much power does it take to light the fluro tube?
But it took microwaves + energy = light effect.

jim

[TheNOP]

theNOP,
Go ahead and be as pedantic as you wish.
Just be the way you are, OK?

thanks

there are 2 reasons for why i am like that.
the first is my fear of not be understood because of my english.

the secound is that i am trying to always keep in mind that some here do not have a background education in electronic.
if you look at this forum globally, you see more obscure theories then actual prouven scientific facts.
so i end up assuming most are not familliar with modern terms and what they mean.

about smaller/bigger tubes.
along with what resonanceman is saying.
the capacitance of the tubes might also play a role.

[electricme]

@Bill,
Exactly.

"A man's got to know his limitations". 

Pirate's Number One Rule for Overunity Research:  To discover overunity, you still have to be alive.

Bill

Good rule, very good rule indeed.

jim

[TheNOP]

Is it possible to have 2 types of electrical energy circulating in an electrical device at the same time?

yes.
AC and DC can share the same wire and still be considered separate components.

there is also a particularity with AC.
you can have a lots of different signals in the same wire and still be able to separate them.

[electricme]

@Jeanna,
lol

==========



that is called a head road right?

bob?

Don't even think about me and a mot.
no way hosay!

I was wondering if it took me 240 turns and some magic with the tuning, to get 450 volts, could I add another 80 turns and get 600? Or, was it more magic than turns?

jeanna

Bobs your unkle means "It'l be jake" or "She'l be right" or" It'l be OK"
Read Nino Culotta  "They're a Weird Mob" it explains it all, or

or look at a 3 min clip here   http://australianscreen.com.au/titles/buddies/clip1/

jim