Joule Thief

[Pirate88179]

@ All:

Here is a video of my Bedini replication that I attempt to show the sounds of the rpm's through my stereo.  The thing I don't understand is that, I have a base resistor of like 460 ohms and two vr's of 5k each.  when I fire up the motor, the two vr's are closed down to their 0 point.  Once the motor accelerates, I can open up the primary resistor and it speeds up.  After a bit, I can then close the primary vr back to 0 and it goes into what I call...second gear, and really takes off.  then, I add some resistance on the primary vr and it goes even faster.  I have no idea why.

I am not attempting to link a JT to it yet so this is off-topic but, I would like to understand why this does this if anyone knows.  Thanks.

http://www.youtube.com/watch?v=LfprTzG5SY4

Bill

[innovation_station]

awsome video Bill!!

i made one too  but not quite as cool .... 

my big coil on the scope....

ist

http://www.youtube.com/watch?v=pXuf_w3p4Sc

[Pirate88179]

IST:

Thank you.

Great video man, where the heck did you find a source for that size toroid?  Your sparks, as you know, did not show up on the video but, I could hear the toroid pitch change and also hear the arcing so, I know they were there.  Trust me, I know sometimes video cams don't see what we see when filming.  Great job man.

Bill

[electricme]

@Bill,
Awsome things happenning with your Bedini.

By your discription, you have made a Bedini with an Electronic Gearbox, now if you can find the electric gearshift how to change gears, man ooooh man.


@Jeanna,
I needed to reboot my PC to fix the access problem I had.

@all
Thanks for the wonderful jibes of my big hoop a ring, I might bury it vertically half way in the ground one day and see what comes out of it, a sort of modified JT come NS coil setup.

BTW, did anyone figure out the reason for the potty?
Its a spare replacement for the original if it breaks.
You need a spare to be replaced "imediately" if one gets broken, if one hasent the funds to buy one immediatly, one is then in trouble BIG time, ha ha, so it is there for when it is needed.

Now I had betta go and see the latest flicks

jim

[Koen1]

@Jeanna: that's a neat research plan you've got there...
The carbon toroid, is that intended to see what effect the carbon has
instead of an iron or ferrite core?
I recall you mentioning carbon's diamagnetic properties some time ago...
... but I had this nagging feeling in the back of my mind that there
was more to carbons magnetic properties than meets the eye...
... and after a quick peek in some of my books, now I know why.
In general and especially in the period before say the 1990s, carbon
was and is considered to be "non-magnetic". Unfortunately, materials
that show very weak diamagnetism are often considered to be "non-magnetic",
so that doesn't really help much. Later research has shown some
very interesting, allbeit weak, magnetic effects in certain types of carbon
materials. (A fairly good overview can be found in the book entitled
"Carbon Based Magnetism; an overview of the magnetism of metal-free
carbon-based compounds and materials" by Marakova & Palacio, 2006,
ISBN-13: 978-0-444-51947-4. In case anyone is interested. )
Certain allotropes of carbon have different magnetic properties.
So-called "pyrolytic" carbon aka "fullerene-like" carbon structures
indeed are diamagnetic, although true fullerenes as in bucky balls
and diamond structures tend to be only very weakly diamagnetic
in respect to for example pure graphite or certain types of carbon
nanotubes.
Carbon nanofoam on the other hand is ferromagnetic.

May I ask what type of carbon material your toroid is made of?
Is it graphite or pressed&baked carbon fiber?
I presume it is not a nanofoam nor fullerene as I assume it is
difficult to find those in toroid shape...?

In any case it will be very interesting to see how a carbon toroid
affects the JT function.
Since I still adhere mostly to the transformer style interpretation
of the JT I would suspect the efficiency of such a setup using
carbon to be lower than that of a ferrite or iron core JT;
but to be honest, what with the magnetic field collapsing and the
back emf that appears to be playing a role here too, other interesting
effects might occur. I am secretly hoping for the anomalous
carbon-boron-carbon "stimulated artificial beta decay" phenomenon
to show up in setups involving carbon and induced magnetism and
current in it. (see the carbon fusion thread)


@Bill: Great respect for the Pirate for that beautiful Bedini replication of yours!!!
It looks really nice. What, if I may ask some dim questions, did you use for
cover on that motor? It looks a little like the metallic cover of a desk lamp I have here...

That "gearing up" effect that you get when you fidget with the variable resistor there,
that is remarkable.
It reminds me of the "peripiteia effect" in that the "peripiteia" motor also speeds up
when an adjustment is made that should actually make it slow down.
Have you considered this similarity? It might be worth looking into?
(Idunno, I'm just offering suggestions, it just seems to me that something similar may
be happening there.)

Interesting side effect in your video is the increase of "static" picked up by the
microphone as the motor steps into "second gear"... Almost as if your adjusting
of the variable resistor causes an imbalance which causes increased "static",
and as if the speeding up of the motor then re-establishes the balance with the
simultaneous effect that the "static" disappears again...

May I ask what output you're getting from it, what the input is, and if you've
already done some experiments with the output to check if it's normal,
"cold", or mixed current?

Keep up the piracy! Lol!

regards,
Koen