Joule Thief

[slayer007]

@ Slayer

How do you A your large coil?

Here is the circuit I have been using.
Notice there is a diode going from the negative side of the capacitor to the positive side of the source battery.
The capacitor has a very big field around it also.So I was just trying to send that back to the source battery also.
I'm still trying differant coils setup and a pancake coil for L2 also works very well.
When collecting the BEMF from L2 coil the light is brighter.
And also when there is a bigger load on L1 the BEMF increases.

[stprue]

A no wonder I was getting poor results!  I was missing a coil and trying to get it to work using the simple SEC set up with a trigger coil!



Thanks for the clarity slayer.

P.S. Did you seesome of my pics a page back?

[slayer007]

A no wonder I was getting poor results!  I was missing a A and trying to get it to work using the simple SEC set up with a trigger coil!



Thanks for the clarity slayer.

P.S. Did you seesome of my A a page back?

Stprue very nice job with Jonnydarvo's simple SEC.

P.S. Dont forget to do a tap start to start it.
Just connect the resistor to the base then disconnect it.

[jadaro2600]

I soldered some leads onto this :: http://www.goldmine-elec-products.com/prodinfo.asp?number=G2859 :: Toko coil from goldmine electric and setup a standard joule theif circuit with it.  It has 6 leads, two coils, center tapped.

I haven't been getting great results from it - it's stats are essentially unknown, but it does act as a transformer.

I did notice however, when I employ this setup, I can increase the over-all DC voltage gain from the coil.

PS, Upper inductor has more winding than the lower inductor.

edit: diagram was off a bit.

[xee2]

@ jadaro2600

I soldered some A onto this :: http://www.goldmine-elec-products.com/prodinfo.asp?number=G2859 :: Toko coil from goldmine electric and setup a standard joule theif circuit with it.  It has 6 leads, two coils, center tapped.

I haven't been getting great results from it - it's stats are essentially unknown, but it does act as a transformer.

I did notice however, when I employ this setup, I can increase the over-all DC voltage gain from the coil.

PS, Upper inductor has more winding than the lower inductor.

What happenes if you remove the center tap connection and the two capacitors from the upper coil? I would think this would be a standard JT with a pickup coil then. Does your circuit work better than a standard JT?