Joule Thief

[jeanna]

@ jeanna

Why not start with this circuit and get it working. When it is working replace the toroid transformer with the ignition coil.

I have tested this circuit and it works. I have not substituted ignition coil.

What is 4/60?
Is it a toroid?- your big one?  is it a cylinder?

My question about the ignition coil was about how IT is wound and why it would be wound like that. I like using something more tame, so thanks for the suggestion.

thank you,

jeanna

edit,
We posted at the same time. I see the answers.

You seem to have placed this additional toroid in between the existing one and the pos battery. So, it is directly effecting the transistor this way. I doubt a transistor could stand this with a real ig coil?

[xee2]

@ jeanna

I doubt a transistor could stand this with a real ig coil?

I do not think there is any problem with the transistor, but that is what experiments are for. Here is another example I did with the simulated ignition coil.

[altrez]

@ jeanna

I do not think there is any problem with the transistor, but that is what experiments are for. Here is another example I did with the simulated ignition coil.

I still have no clue why the other transformer is in there? It makes no sense to me on how to even hook it up? What is the 10/10 for anyway? The Ignition Coil is a transformer it has a + and a - and a HV output.

-Altrez

[xee2]

I still have no clue why the other transformer is in there? It makes no sense to me on how to even hook it up? What is the 10/10 for anyway? The Ignition Coil is a transformer it has a + and a - and a HV output.

-Altrez

The ignition coil needs pulsed current into it to work. The JT pulses the current for the ignition coil.

[altrez]

The ignition coil needs pulsed current into it to work. The JT pulses the current for the ignition coil.

Yes that is true but how do you hook it up? What wire from the JT do you connect to the + on the IC and what wire do you connect to the - On the ignition coil? And why do you need the Toroid? Cant you just use the 2n3055?

I am really lost on the wiring? Do you splice wires from the connections on the 2n3055?

Thanks!

-Altrez