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[resonanceman]

Do not just switch the 1 and the 10. Do the whole thing.

Jesus

Jesus

My  flyback  transformer JT is  a little  bit simpler than yours .
I use pins  1  3 and 10
They  are  hooked up  exactly like  a  regular jt .
The  3 pin is  hooked up  as if it was the  start and   end that  are  twisted together  on  a regular  JT.

gary

[jeanna]

I think this is the lowest power for lighting a fluorescent tube that I have seen. Only 10 mA from a 1.5 volt AAA battery. The tube is not as bright as it seems in photo, but it is more than just barely lit.

Xee2,
Would you be willing to draw this newest circuit in the form of a regular joule thief circuit?

thank you,

jeanna

[Mk1]

@xee

Nice ! I just got a flyback my self , i would love it if you could find the drawing of your ac circuit .

I just can't find it .

[xee2]

@ nievesoliveras

Do not just switch the 1 and the 10. Do the whole thing.

Jesus

      There is no need to reverse pins 2 and 9, they are tied together. The circuit you posted is not better. Build it and you will find out.

[xee2]

@ jeanna

Xee2,
Would you be willing to draw this newest circuit in the form of a regular joule thief circuit?

thank you,

jeanna

     It is drawn as a regular JT.

[xee2]

@ Mk1

@xee

Nice ! I just got a flyback my self , i would love it if you could find the drawing of your ac circuit .

I just can't find it .

   I do not have an AC circuit. It is powered by batteries.

[jeanna]

@ jeanna

     It is drawn as a regular JT.

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

[xee2]

To anyone not familiar with flyback transformers:

There is no standard pin out for flyback transformers. The pin numbers can be very different between various models of transformers.
 

[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

[xee2]

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

I posted circuit. If you need more info I have more.

[Yucca]

@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

Hi MK1,
The difficult bit is finding the HV return pin. one tip is to use 6V supply (4 x AA) to hand pulse a coil that has approx 1ohm resistance. set up a small spark gap (1mm) between the red HV lead and a  croc clip flylead. pulse the coil and clip the flylead to various other pins looking for a small spark in your gap. this way you hunt for the HV return pin. look for the strongest spark. You may need to reverse the 6V on the 1ohm coil before you find it because of the integrated diode. once you find it you also know the polarity needed for the drive too. good luck.