Joule Thief

[innovation_station]

well i made the second unit  2 10 160 turns ...  slopply .... didnt seem to matter

so on my scope im up to 250 v and the wave is cleaning up im useing 200 ohm resistance ..

i did not try to tune it by freq yet ..  i changed to 28 ga magnet wire in the second unit and fone wire as jt coils

so i will build another 

2 10 and 320  and see where this goes 

kinda reminds me of slayers jt's

ist!

thease are  1 " rings and only 1 wire picup in only 1 drirrection of winding

btw when i hook up the scope i can see sparks on this unit  lol  it is running on a aaa almost dead and a 3904

got the 320 turn unit all wound testing  on scope ...

[Mk1]

@jeanna

I am not suggesting to modify your toroid, i am just stating issues that i see for a near future if we want the improve on cfl work time.

There are many ways to improve , and many ways of doing it ,  it could be in the coil design , resonant tank ( you can get the same freq different values , Some may be more appropriate then other regarding consumption .

Its a fine tuning art , i always believe that if you can improve there is on harm in rewinding a toroid , but are we taking about the mk / hazen / sorry i don't remember the credit goes where  . The one with the jt on one side and 2 mk coil , i don't think the mk  coil work good with the jt coil on one side , so i guess that toroid could be improved , wire can be rewound and recycled , nothing lost here , plus gain in knowledge . My mk design is not only the pickup coil but also the jt coil at 180 , they are made to work together .

Mark

[innovation_station]

done but still not enough at 200 ohm resistance i have 350v with 320 turns almost perfect sine wave...


getting there ...   agin untuned and on a 1" ring ill take a few pics sometime tonight ... 

ist!

no diodes just the 3904 and 2 100 ohm resistors ..


i want a 1" hand wound that lights a cfl from 1 aaa battery ...

ok im winding 1 more  1" with 480 turns ...  i hope i get it high enough in voltage now   with out tuneing it ...  cuz when i match the resistance voltage should climb right up

and after i get the cfl to light i have some cold cathode lumenssance rods to light but they take much more   voltage wize ..   the unit i have here was sent to me .. and it uses npn and pnp and the spikes are up into 1500 v ... but it also uses 9v 300ma to operate ....

this unit on a aaa charged by solar has a MARKET!! 

[jeanna]

done but still not enough at 200 ohm resistance i have 350v with 320 turns almost perfect sine wave...

very nice!

no diodes just the 3904 and 2 100 ohm resistors ..

YEAY! 

i want a 1" hand wound that lights a cfl from 1 aaa battery ...

Oh yes, please go for it.

I am looking forward to scope pics if possible too.
Nice, ist.

jeanna

[innovation_station]

sorry jeanna i have not been of more help lately .....

lot on my mind ..  but i got luckey enough to see my children this past weekend  and i guess they restored some of my creative engeries ... 

i really apreacieate everyones work round here  and you have done just a wonderfull job!!

so now i feel like building ...  loooooook out 

i took 2 or 3 pics of the units i have been working on and a scope shoot

10v per div and the probe is on the 10 x setting my mesurements are peek to peek ....  and im new to reading the scope properly ...  so i probally am not ...  not skills in that department ... 

but all is well got the best team right here .......

william!