Joule Thief

[xee2]

@ jeanna

Thanks
That is the reason I was/am confused.
What toroid is in this thing called a flyback with 8 pins and why use this instead of a toroid?
Just being confused again,

jeanna

There is a transformer core very much like a toroid in the transformer, but it is not actually a toroid. It is made of sections that fit together. I do not know what all of the pins are for. They are either not used or are additional pickup coils that are used for some function in the TV set. The advantage of the flyback is that it has a very large number of turns with high voltage insulation for the main pickup coil. You could make the same thing on a toroid if you could get that many turns on the toroid.


EDIT: remember, the Fuji is not a toroid either, but it works like a toroid transformer.

[Mk1]

@xee

The circuit you made with 2 transistor that could light both side of the neon ?

Sorry i should at lest leave a space between sentences, It would be less confusing .

Mark

[xee2]

@ Mk1

I just got a flyback my self

I hope you have better luck than me in figuring out which pin goes where. I bought one like Yucca's because he had already done that. I always ended up very confused when I tried to work it out.

[xee2]

@ Mk1

@xee

The circuit you made with 2 transistor that could light both side of the neon ?

Sorry i should at lest leave a space between sentences, It would be less confusing .

Mark

I posted the circuit and a photo of the board. What would you like to know?

EDIT: I can repost if you want me to. I think this is what I posted.

[Mk1]

@xee

I would love if you posted it again.

For the flyback i will just map it first check the ohms , then try it , if it doesn't work i will reverse one of the leads , that should do.

Thanks again.

Mark