Joule Thief

[jeanna]

yes j

i can say i have driven 6 leds with no diffrance .. from 4 turn secondary and i have had 2 ...  i need to use a weeker battery ...  or there too bright and my transistor still gets too hot .

as long as all coils are the same .. it dont care ...  and DONT TAP BACK SIDE!



here is the pic

w

Thank you w,
This kind of experience is what I am looking for.

Why does your transistor get hot on a joule thief?
You must be doing a feedback too?

thank you,

jeanna

edit
that is such a nice looking circuit.
I should make mine look like that! 
j

[innovation_station]

yes i kinda think that.... but if that is the case and i bet it is THATS WHY THE TRANSISTOR IS AND AMP AT ALL ...  if ya understand what im saying ... : )


lol


thats a joke for another time ... tho

i think i may find a ballance point where it works without heat to the transistor as i remove more of the EXCESS MAGNETIC ENGERY  that is stored in the toroide ... right now i have 2 outlets... and 2 burn out your transistor feedbacks ...  SAY PNP AND DIODE.....


lol 

say what!

w

[Magluvin]

Im not sure in your case. It was just what you were saying in the previous post that triggered my comments.
It is possible that the high voltages you encounter override my experience here. But I would have to say that the initial currents, at the voltages that occur, that enter the leds are sure to throw them into excited states and it could be that more in parallel could be diminishing that current ability to excite or overcome overall parallel conduction in all of the leds. So in series, the inability to go beyond a certain no. of leds would be due to lack of enough voltage in total, even though the current is available.
Soo, lets say you have 30 leds in series and they are well and bright, then add another bank of 30 in parallel to that, if the current is available, they should all light. And if only one bank lights, a .22ohm or so res. in each series bank should let them all glow.  Maybe.  =]  some fiddling may be needed on those res. values.
In my exp. a corona over the chip just may damage the chip, from allowance of available current to flow across the side junctions.

Mags

[innovation_station]

so since i mentioned my D 808 G

i should explain an 808 first off there a tone of meanings to 808   

but in the SUN DISC D 808 G   AKA DOG lol  it is a sound sample it could be best described as 2 bedinis counter rotating counter accelerating  to a retatred speed ...  with out distortation ...

to visualize an 808 sound wave  look at a commet   boooooommmm  then zzooooooooooooommmmmm

like the comet its self and its longggggggggg echoing tail ... and the boom trigeres the other dirrection ... and ta da .... 


w

in other words ... yep ... pretty much what showed up in the skys.....   lol  ; )

kinda like this  just better lol

http://www.youtube.com/watch?v=FhVv8eqrRfI

now imagine 2 freq  D 808 G plus ou put modulation .....and self timeing... o my ...

[kooler]

jeanna
i meant to post this a month ago
but those leds i had on the aircoil were (100ma) bulbs they will not lite on a coin cell
but will lite full on a 2 aa batt together
and the the aircoil did 4 together on 45ma's draw
the stems of the leds are so big they will not fit in a bread board
didn't know if you guy caught that in the pics i showed
they will blind you for a good 30seconds or more if you look at them for a half second
and i have had no luck getting those 1'' goldmine to put out anything over 310vdc
without going over 105 ma's