Joule Thief

[jeanna]

My glows arrived in the mail today. !!
I was on my way to a group and showed them off. Everyone in that group  will be getting some, I think. Well, for 50 cents who can resist?

@gadget
I didn't have too much luck putting the cap in the base resistor spot. It seemed to lower the peak to peak voltage.  I think it was that loop that you did somewhere, sort of like the schematic that xee posted today.

Somehow, I need to wrap my head around the fuji upper level section. I think that is the part I need to turn on the fluoro.

Maybe not. It may just be that I need to tune my coil to the 3055 transistor instead of the 3904. I am hoping that is the reason it does not turn on. It makes sense. I remember plopping a 2N2222 into a circuit that had been using a 3904 and it was terrible. Then the reverse happened. It never occurred to me til today that I am actually tuning to the transistor and not just the core.

We will see.

Thanks everybody,

jeanna

[Pirate88179]

Jeanna:

How are those glows?  Do they last a while and is there much light?  I ordered my supercap from Gadget today and I am almost broke again but I want a bunch of these things if they work.  Thanks.

Bill

[xee2]

I do not know if anyone is interested, but here is a circuit that will light a 20 watt tube using only 80 ma from a AAA battery. It also lights a 4 watt tube as bright as the Fuji board but only needs 78 ma to do it.

[Pirate88179]

Xee2:

Of course we are interested.  Great job!  And this from a AAA battery?

nice work.

Bill

[jeanna]

Yes, anyone is interested!

You are on a roll!
It might help a tiny bit to say what each new pic is doing from the last one. I usually make a copy of them, so I have the drawing. When I get any fluoro to light, which I haven't done yet, I will want to try all these variations.

thanks for the inspiration and thanks for posting your pics,

jeanna