Joule Thief

[Mk1]

@jadara

It do work i bit better but , i can't put enough pickup coil on them and get 30 to 40 volts because of the turn ratio.
If you put more turns on the jt side you need even more to get the out put , if you need low turn low voltage it better , but not for high voltage.


@all

http://www.disclose.tv/viewvideo/20040/Could_Bush_be_arrested_in_Canada__/

Right , that will happen , but still funny.

[TheNOP]

I'm getting very poor results with a floral wire core.  - I get better results out of a linear transformer.  It seems as though the iron wire I'm using is stifling the whole process.  I've tried my configuration shorted out and disconnected.

what coils configuration, twisted iron/copper pair  ?
what are the differences compair to your needle experiments ?

[jadaro2600]

Ten turns of floral wire - around which a bifilar coil is wrapped.  The results is a bifilar around a coil.  I use the bifilar for routs to the base and collector.  Collected voltage without an LED is 11.5 volts, but with a load it's 3.05... I've got better configurations.

There is almost nothing coming off the iron wire itself.

[jadaro2600]

Needle rail ...

Nice and boring.  if anyone cares, the longitudinal direction are the same but the winding direction ccw vs cw...  inner is 30g and outter is 26g.  12v unloaded, but the damn thing draws 75ma.

[Mk1]

Ten turns of floral wire - around which a bifilar coil is wrapped.  The results is a bifilar around a coil.  I use the bifilar for routs to the base and collector.  Collected voltage without an LED is 11.5 volts, but with a load it's 3.05... I've got better configurations.

There is almost nothing coming off the iron wire itself.

One the iron wire did you check only with a meter ? iron is more resistive but still a conductor , and yes it hardly show anything out , put a led on it to get a quick answer , but that said , the circuit could also show almost anything in , think about that one .

Mark

Keep the good work