Joule Thief

[gadgetmall]

@ adgetmall

Great info. Thanks. One inch square tiles are being sold for 50 cents each at this web site.

http://www.batterystation.com/curtisium.htm

Hi . O well i guess i wont sell em then Thanks for the source though ! They work fantastic and are so bright . they also break just like Glass tile if you happen to drop it on the sidewalk . ALSO THE JT with UV leds will MAKE THESE THINGS SHINE EVEN BRIGHTER .

[xee2]

It lights. But it is very dim.

[electricme]

@all
I made a TinyCad drawing of my part of Hazens1 toroid circuit.

As a lot of people don't have High Voltage diodes in their kitt, another way to go around this problem is to make up a string of diode's in a series array configuration.
As each diode has a voltage drop of .7v, I don't see this as a big problem when anyone has been able to push out 600volts or more.


In the bottom circuit I decided to add a capacitor in parallel with each diode.
I think this should bump up the grunt output a bit.
Since I havent made this (as I don't have enough HV ceramics), I therefore cannot say if it will work or not, but I will rectify the pasts prob on the weekend.

jim

[electricme]

@TheNOP,
Wasnt that a tricky question I set before the king 

i just had a flash and think i understand what you really meant.

to understand what is happening, you need to know how those bulbs are working.
basicly: An electric current passes through a filament, heating it to a point is produce light.

the key factors of the quantity of light are :
- the filament's total surface area.
- how bright it glow(the resistance control the watts that make it glow).

assuming a 240volts bulb is made from the same materials as a 120volts bulb.
the only thing that can make a difference are the 2 things above.
in order to allow the same wattage at 240 and 120 volts, you need a filament of different resistance for each one.
the 240volts filament will be thinner and longer.
the 120volts that will be thicker and shorter.
you should end up with about the same surface area for both,
and with same wattage, you will get the same amount of light.
one is using more current, yes.
but, with the same materials and different resistance, they use the same quantity of energy to make the same quantity of light.

you can try to connect a 120volts bulb to a 12volts 600 amps car battery, you won't be able to make the required amps to flow through the filament to reach 100 watts because of its resistance.

I carn't test this as I don't have a 120v light bulb, and if I shuved 240 volts threw it, I'm shore it would exceed its lightoutput.
I know the bulb filaments in our bulbs shore get a move on if the bulb is bumped. (bounce around).

There is actually no concrete answer for this question as there are other 100 wattage light bulbs, eg car headlights, hand held spotlights, there is Halogen, tungston, even other exotic materials eg Lo and Hi Pressure sodium.

You did well Nop to answer it.

jim

[electricme]

@Jeanna,
The tank circuit, Teslas discription

=======
OK this is too cool.
Maybe this is well known and a waste of everyone's time. I have never actually read the reference that explained the derivation of the term tank circuit.

I think I found it
I call it
"Why it is called a tank circuit..."
so, here it is in Tesla's words:

"by comparing the electrical
process with its mechanical analogue. The process may be illus-
trated in this manner. Imagine a tank with a wide opening at
the bottom, which is kept closed by spring pressure, but so that
it snaps off suddenly when the liquid in the tank has reached a
certain height. Let the fluid be supplied to the tank by means
of a pipe feeding at a certain rate. When the critical height of
the liquid is reached, the spring gives way and the bottom of the
tank drops out. Instantly the liquid falls through the wide open-
ing, and the spring, reasserting itself, closes the bottom again.

===

This similar to my understanding of the way the JT operation.


Just swap the water tank for a toroid, and the water in the tank for a magnetic field.
The pipe filling the tank, change to the Bifiler windings, the valve under the tank opening and closing becomes the transistor.
The flow of the magnetic field collapses, it hits bottom, the energy when it collapses can be picked up/harnised, by any coil wrapped around the toroid.

There it is, how Teslas discribes the working of his electrical system.

jim