Joule Thief

[resonanceman]

has anyone been looking at resonance? i saw a pic of light and its resonance or half lifes. ill break it down.

if you broadcast a 3hz wave you get a half strenght wave at 6hz and a quarter strenght wave at 9 the life diminishes by half of the previous as the frequency doubles.

i compared these waves, the way the peak power over laps you would not want to set a reciever coil to the transmit frequency as that frequency will actually be hindered by its own transmission! and i know were not dealing with radio transmissions on this forum but i believe the same principle my apply to the joule thief although i havent had a osciliscope to test.

what it seems needs to be done then is a tank circuit set up on the joule thief to resonate at this higher 3rd wave the 9hz then the peaks of the 6 and 3 will better overlap in a way to have less cancelation.

of course the transmit wave carries the bulk of the power and thats why we still recieve some of the radio transmission but just think the second wave plus 3rd wave equals 75% and its frequencies are in just such a way that majority of their power acts against the primary wave!

on the other hand longitudinal waves dont suffer this and travel faster with +90% power transferred. i wonder if theres a way to use a solid state longitudinal wave?  back to google!

just wanted to share. if someone finds it interesting and wants to discuss yell at me

Artic Knight

I think the problems with JTs and resonance is that JTs don't hold a stable frequency......so it is almost impossible to keep the circuit in resonance.........


gary

[The Observer]

Artic,

You can light a CFL with an average 1.5V Joule Thief by using output to resonate an ignition coil.
I believe this is one of the next steps in the Evolution of the Joule Thief (Resonating High Voltage Transformers).

                         I  highly  recommend  this  video...     Kudos Morper44 !
                              http://www.youtube.com/watch?v=Zacait0vgCM

If you want a low & steady input voltage...
                     it would be possible to use a     wall transformer/voltage divider       to achieve a stable frequency.

Best Regards,
                     The Observer

[kb24]

Hi,

I am new here. May i know how to build a joule thief with an input of 0.8V and 0.1mA ? I mean how many turn i need to put on toroid? Any tutorial or step by step instruction for me. I really noob in electronic stuff

[synchro1]

Here's a link to my youtube video showing the Kodak Funsaver light:


http://www.youtube.com/watch?v=TFwh4nZNHXA

[gadgetmall]

Here is My Fugi Mods in Pdf  form . They would not fit here so here is the link . I Modified all three Fugi Versions including the aaa with the led but i couldn't find the pdf i made for them . If i find it you may have it . Merry Christmas Gang .
http://rapidshare.com/files/435791071/GADGETMALLFUGMODPLANS.pdf


Gadget