Joule Thief

[resonanceman]

Another deviation on the whole Helmholtz inductors idea...  this time lighting up a tester neon.  Which was lit, but is now flashing.  Voltage reading across the capacitor is 111.0v

It's interesting these operate like they do.  The soldering on these was done alike on both of them, so, the red wire on one corresponds to the red wire on the other.  ( i.e.  they're wired opposing in the circuit just like any standard joule thief ).

Jadaro

Interesting  idea

I have  a couple  of inductors that look similar to yours ....I can't  read  the numbers on them       ...they  are not  exactly the same ......but  close .....they are on ferrite  cores.
I will  have to see  what I can  do with them .


gary
gary

[gadgetmall]

@all
     Just for your Information . RGB leds will not work on a Jt normal or secondary  as it stands . . The reason why is they RGB leds Have a MicroChip in them and Malfunction on a Jt . . I have The cure ! I have Played with them and have ran them fine with a modification I have .Same goes for any Chipped Led  be it Blinking or rainbow RGB's They Need Pure Dc ! . Simply Put a Diode or Bridge rectifier on a secondary Output fed to an electrolytic Capacitor then you can light Chipped Leds .. L) Hope this helps everyone !

Gadget

[resonanceman]

And i have been trying to figure out what you all mean by secondary? I can t find the original deffinition of it in here.
Is it like a whole other coil you add to the circuit?

Welcome Dog812

The  JT is the  2 original wires of the coil connected   with the start of one  to the end of the other .
The  secondary is an addition to the  original JT


gary

[jeanna]

@Altraz,
I think johnnydavro's ideas are the most straightforward to help you, but I seem to remember that you do not have a dmm.
Is this true? They can be bought for under $10. Allelectronics has a good little cheap one.

also,
Do you have ANY regular LED's?

I don't remember where you live, but even radioshack sells leds that should give you the information on wether or not your secondary is functioning. (they have expensive single ones but they also have cheaper ones in a bag) I am assuming the money is a problem, cuz it is with so many of us here, but if not, just go and spring for some of these things. (pardon me if this is untrue)

@gadget thanks for that simple solution.

@all,
I have a blinking light on the secondary EDIT: make that PRIMARY of a jt .5volt battery this morning. The amps draw is oscillating to 4mA then 0.5mA then 0.00 then up again very regularly.
(EDIT there is no rectified voltage from the primary...)
BTW there is a cap across the battery that is oscillating from .5v to .6v too, so it is not happening from a battery recovering but the .5 volt level, I think.

Since it is 11, I should get some breakfast!! b back soon,

jeanna

[resonanceman]

P.S. Someone mentioned a "potentiometer"
Is ther any certain specs on this thing i shold be looking for.. or
this is my local electronic store i shop at.. if you can tell which item to go get from here. that would be great..
http://www.rpelectronics.com/

Dog

a potentiomete or pot is  a variable resistor
it  will  usually have  3 coonnectors on it ........one to each end of the  resistance element and the center  to the  wiper .
You  will be using  the center  and one of the other connections

If you have an old radio  or something like that the volume  control is a potentiomete

they make  pots  with different resistances .....  try to get one  with at least 1 K restance ......more  is  OK 

gary