Joule Thief

[altrez]

@Mk1

     Thank you for the help. I took one piece of wire that I had left over from my first JT build and wrapped it around an open spot on my toroid 4 times. So now I have the extra coil of wire on the toroid and it will not light an LED, I also tested it with my meter and it shows no voltage.

      I am not sure what I might of did wrong. Do I need two different piece's of wire on this new small coil?  Or do I need to wrap it on top of the wire that I have already placed on the toroid?

Thank you so very much!

[Mk1]

@all

Tesla tube co. Ez 81 is this a clue.

also real nice find tesla 1894.

http://www.scribd.com/doc/13040608/The-Researches-of-Nikola-Tesla-1894

[Mk1]

@Mk1

     Thank you for the help. I took one piece of wire that I had left over from my first JT build and wrapped it around an open spot on my toroid 4 times. So now I have the extra coil of wire on the toroid and it will not light an LED, I also tested it with my meter and it shows no voltage.

      I am not sure what I might of did wrong. Do I need two different piece's of wire on this new small coil?  Or do I need to wrap it on top of the wire that I have already placed on the toroid?

Thank you so very much!

At this point , one turn will not show you anything on the meter , it doesn't mean its not there , how is you toroid again bi filar or mk style . but first the led you did try directly on the coil nothing else , there is 2 way to connect led check both
If nothing try 2 turns .

[TheNOP]

THE WAY I HAVE TUNED MY MK2 COILS..... THEY ARE NOT FREQ DEPENDENT      meaning ....  lol   out put remains the same in working range...

how did you tuned them ?

i thought a core is chosen for it frequencies response, a working range, and, wave length coupling methods only used for core less coupling.

i am a bit confused at trying to decipher what you wrote.

if it was only volts that'd be fine, but some have reported getting high voltage DC out,
now that's something I'm not seeing at all. For that would seem to imply actual
power gain as in not only is the output higher voltage but it has actual amperage too...

maybe i have missed that post.

but it surely don't imply a power gain.
almost all voltsmeters will display a dc value when measuring ac of high frequency.

my meter do read ac and dc voltage out of my 110 mm flash camera.
there is no caps on it anymore i removed it.

Yeah, I was thinking, could we not wrap a layer of simple iron garden wire around it like a sort of
additional core layer and could this perhaps enable us to wrap another coil layer around it? Just a wild thought.

it would help the inner coils, but there will be almost no interaction of the internal magnetic field and the outer coil(s).

[altrez]

@Mk1

I am using the bifilar coil. I just tried it again with 1 and 2 and 3 turns and just the LED tested each side of LED and it will not light?

Any ideas?