Joule Thief

[Bizzy]

@all and Ground loop

I made a video of the Mk1 winding , based on Jeanna observation it transformed the radian tall spikes into something similar to AC waves , but benefit is to be able to load the secondary without losing power on the JT led .

Basically you wind one layer then come back winding the wire between the other wire so you have one layer thick on the top but 2 layer thick in the middle of the toroid .

http://www.youtube.com/user/abramrk1?feature=mhum

Thanks that will help alot
Bizzy

[Pirate88179]

Here is Lidmotor's Jeanna's Light schematic.  Maybe this will help also.  I built this and it works great.

Bill

[Groundloop]

Jeanna,

When you find the time, can you fill in the coil number of turns and wire thickness?
EDIT: Used the information from Bill in the drawing.

Thanks,
Alex.

[Bizzy]

Jeanna,

When you find the time, can you fill in the coil number of turns and wire thickness?

Thanks,
Alex.
Hi Jeanna
Also could you give more detail on the 25R and 22 R. Also where were you able to find a torroid so large?
Thanks
Bizzy

[Pirate88179]

It was 3 turns on the base coil, 13 turns on the collector coil and 330 turns on the pick-up coil.  At least that is what Lidmotor had on his drawing that I replicated.  24 ga. on everything except 30 ga. for the 330 turns.  Transistor is a TIP 3055.  22 ohm base resistor and 25 ohm pot.  I actually added a second pot for better tuning.

http://www.youtube.com/watch?v=-m3sTtDbrPI


Bill