Joule Thief

[innovation_station]

i used the 2222 and it only lits brightly if i hold the bulb ..

i used a 4401 same result yes it does lite without touching it but it is sooo dull  still no diodes

might just be a freq thing now ...

ist 

but yes mark the 3904 did not do a thing for it

[Mk1]

i used the 2222 and it only lits brightly if i hold the bulb ..

i used a 4401 same result yes it does lite without touching it but it is sooo dull  still no diodes

might just be a freq thing now ...

ist 

but yes mark the 3904 did not do a thing for it

It look like its searching for a ground , try a neo , or one wire lighting  grounding the other end of the tube.

[xee2]

@ jeanna

@ jeanna

If your want to run a fluorescent tube for a long time I would suggest using a lot of turns on the pickup coil so that you will be able to generate the 400 volts needed to light the tube with a lower battery drain.

I think Mk1 is making the same point.

[innovation_station]

by changeing the resistor with a 1 k pot and useing a 2222 i got it in perfect sine wave at 500 v peek to peek  still not enough diode time ?

but even if it dont lit the cfl i was thinking of useing some inductors from the cfl curcuits ... 2 of them   and wind a 3 or 4 turn primary on them they have thousands of turns on a feroite square rod
...  and up the 250 v half wave to what ever i get from the inductors as a transformer .. 

might that work try it tommorow ... 

to late tonight

peace !


ist!

[Mk1]

@ jeanna

I think Mk1 is making the same point.

Hi xee you managed to understand what i said . Cool 

Keep the good work !!!!!!!!! thanks