Joule Thief

[innovation_station]

thanks sparks bro !


well i dont know what is wrong with the bedini unit but i cant get it to run i will build a new one ...  since i got sick of fiddling with it trying to get it to work ...  i decided to see if i could power my magnetic kick coil from my npn tuner board ...  of course it works just fine ... AND THIS THING DRAWS LIKE 100MA AT 12VDC .. IN past tests .. on this aa unit ...  it will run constant at 7.5vdc!! 

and it even makes it squeal but it doen not lite the neon as this unit is set for 12vdc supply ...

thought it was kool i  could run it constant at 7.5vdc supply!   

ill add a pic

ist


it will lite the neon if i pulse it ... 

last pic entire setup

[jeanna]

I want to solve the problem of the special switch.
I love these led light bulbs.

I have been testing today's green 500v toroid with the LoA 20leds bulb
I do not have any AA battery holders that work reliably so I am using a AAA battery.
The battery is 1.2v NiMH AAA with 750 mAH
and for 3 hours the light was bright,
and for the next 2 hours it wss more than a decent nite light, and it was still on with the battery down to 0.59v

NOW that is lower than the turn on level of the transistor which is around 0.86v on this particular one... well that is what the base voltage had when it was on earlier.
So, what is happening must be this crazy thing with the caps and resistors setting up something with the toroid that keeps the transistor turning on even when there is not enough in the battery to do this.


It is essentially off, however there are still 20 specs of light coming from the tops of the leds.
This has been 5 1/2 hours.
I will keep it on until it is gone.
I think this is very interesting.
It might be useful too!

jeanna

here it is with a plastic cup as diffuser and plain

[jeanna]

well i dont know what is wrong with the bedini unit but i cant get it to run i will build a new one ... 

it will lite the neon if i pulse it ... 

Maybe the transister blew.
The neon is not supposed to light unless it is shorting... or some explanation.
Maybe the neon was too slow to halt the pop.
Inquorate says he blows up the transistors all the time even when the neons are in place.

So, just to save yourself some trouble change or check the transistor first?

jeanna

[Pirate88179]

Jeanna:

You may be onto finding one of the keys to a self-runner there.  Start it with the battery, and then...maybe you don't need one?

Hey, you never know.

Bill

[innovation_station]

Maybe the transister blew.
The neon is not supposed to light unless it is shorting... or some explanation.
Maybe the neon was too slow to halt the pop.
Inquorate says he blows up the transistors all the time even when the neons are in place.

So, just to save yourself some trouble change or check the transistor first?

jeanna

thanks J

i will check it was one of those in the window ya know ... so i bet lol  i will change it  but i want a new board any ways ... 

i have no problem to power the widget from the whats it ... lol then feed back to source .. and pull 10 BASE FEEDS OF DIFFRENT VOLTAGES .. ALL FROM 1 AA AND STILL USE THE SECONDARY ON THE PNP !

w

im one of those crazy ....nutz    and i didnt fall too far from the tree lol
then youz  gotz some those dozzie nuts that fell from the stupid tree and hit every branch on the way down ....   

seen lots come and go ....