Joule Thief

[freepow]

@ All
PLEASE READ ALL THIS CAREFULLY, THANKS

This is a basic Joule thief 13,13 turn Bif and 30 turn secondary and has been tuned with variable resistor to its best at  o ohms.


Photo 1,  1x EER lights only 1 LED       EER output =  .7 to .8 vdc  at  4 mA's
Photo 2,  1x EER wont light 2 LED's     EER output =  .7 to .8 vdc  at  4 mA's
Photo 3,  2x EER lights 1 LED brighter  EER's output =.7 to .8 vdc  at  7 mA's
Photo 4,  2x EER lights 2 LED's           EER's output =.7 to .8 vdc  at  7 mA's
Photo 5,  2x EER wont light 3 LED's     EER's output =.7 to .8 vdc  at  7 mA's
Photo 6,  2x EER wont light 3 LED's a clearer picture of 3 LED's    EER's output =.7 to .8 vdc  at  7 mA's
Photo 7,  1x AA battery lights 4 LED's very brightly            AA output =   1.1 to 1.2 vdc  at  heaps of mA's
Photo 8,  1x AA battery lights 4 LED's clearer picture         AA output  =   1.1 to 1.2 vdc  at  heaps of mA's

As you can see the lower the mA's in a EER = less voltage at the output of a Joule thief
2x EER's had more mA's so I could light more LED's
1x AA has plenty of mA's  and I know i've measured the output on a similar Joule thief which had 50+ vdc,
but my 1x EER only has .7 to .9 vdc  at only about 4 mA  and  through the Joule thief it spikes at only...
3.8 vdc,  so as far as I can tell then the more mA's you have in a EER = higher voltage output from your Joule thief. 
Am I wrong or right ??

[jeanna]

Ah yes, it is december in the far north.
It is too cold for me to experiment but it is a good time to start a new thread... right?

http://www.overunity.com/index.php?topic=8540.0
It is a combo thread, for discussing using the EER to start a joule thief, so if you are working on both lets meet over there.

thank you,

jeanna

[tysb3]

somebody try this idea ?
to transform again low voltage, but higer curency
I feel its should be about >1 efficiency and easy measureble
maybe Ill try it

[jeanna]

Night Visitation
A print of a drawing shown under a gallery light.

( )

This is the one(727v,6.5KHz)  that sparks through the switch.
I took it apart and gave it a new lease on life.

OH bye the way, the clips holding the tube are from wallmart and sold for holding led strings in place.

jeanna

[Pirate88179]

Jeanna:

Nice work.  That tube is fully illuminated from end to end.

Bill