Joule Thief

[TheNOP]

Remove the tier 2 transistor and resistor.
Nothing will change.
Take the toroid lead that used to be in line with the base resistor, and jumper it to the negative leg of the LED in the secondary spot.
And move the secondary lead from the same spot (negative lead of the LEDs) and now place it into the negative battery rail. (second tier still)
Kaboom, the lights will get bright. watch your eyes!

and what happen when the 2 tier is not there ?
leds connected alone on the first tier.

[jadaro2600]

off cue and old, but here they are..

two very strange coreless windings.  The upper is a self inductor and the lower is a linear transformer ( which works, btw, rectified 7v, not substantial, and no way to add secondaries that I can see, but I tested it none the less ).

[dog812]

I just made 2 similar JT's one basic with 6 paired windings, 2n2222 and 1K resistor.. and one using the same # of turns , same torrid size.. everything but using this schematic.. http://www.instructables.com/files/deriv/F2I/ZRXQ/FR0ZHOS5/F2IZRXQFR0ZHOS5.MEDIUM.jpg  adding the 22n cap..

I didnt notice any change in brightness..  And i have no voltmeter yet.. so i dont know if it is any better.

Still searching for way to light these led's up brighter.

[Mk1]

@dog812

You really should get a cheep meter , mine cost 10 dollar , it will really help you !

[dog812]

Yah makes sence.. haha.
What is a good cheap meter to get?