Joule Lamp

[JouleSeeker]

  Hi, e2matrix -- Yeah, I need to get to measuring power output more directly (as discussed in my last post) right away.    The light-box I'm using for COMPARATIVE Lumens measurements is helpful to see progress; but its not a sphere and besides (as I said) I'm ready to move along to measuring power output directly.

Good point, Lynx:

To measure power output is going to be very tricky.  Output changes according to load.  If you could get a resistive load like a heating element and adjust the Ohms until you get to the same hz as you would expect with the LED bulbs it might be accurate.  This is how we measure output of alternators at different rpm. 

I'm looking at this, adjusting resistance, combined with calorimetry, to get a solid handle on the output power.  It will be useful for other devices, too, of course.

[NerzhDishual]

Hi Lynxsteam & people,

Would you ship your coils to France?
Could you give us some idea of your prices?

Else:

................
I am sure this is an area to explore but I believe in the end more components
would be required  and there is no need to make something simple a lot more difficult.
..........

I do agree.

I have tried to put a 1N4007 diode (your initial CCT) between the transistor base
and the transistor emitter. The amp consumption is divided by about 3 but
my 6 watts fluorescent tubes bright less.
Yes, this is a very accurate scientific measurement...

BTW: If you try this diode, please do not connect it between the transistor base
and the transistor collector as I wrongly did. I very promptly managed
to transform the 253055 into a mere diode.

Some other 'measurements':
Frequency of my Slayer Exciter= 4.5 MHz.
Frequency of my LJL:
With the now deceased transistor (2N30550) about 700 KHz.
With a new 2N3055: about 2 MHz....

These frequencies can be checked with a medium/short waves AM receiver.
You can perceive the "carrier" (absence of 'noise') and also perform some
kinda Morse  by hand hitting some wires.

The Slayer exciter can even be transformed into a small Theremin instrument.
You just have to move your hand  near the coil and you can hear some
modulated sounds in the AM receiver.
http://en.wikipedia.org/wiki/Theremin

Very Best,
Jean

[JouleSeeker]

  Agreed, Nerzh -- it's exciting that Lynx is willing to build and sell these (presume on ebay).
Get others researching this!

You say 2 MHz on your LJL;  the cranberry-version LJL I'm studying has about 20-30 KHz (depending on # of LED bulbs etc)!  can't pick that up on my radio...

Check out Lasersaber's latest -- http://www.youtube.com/watch?v=uPabWOqnvsc&feature=em-uploademail .  Cool!  doubt he'll make and sell these...     Also, I wonder if he can really fly with one of these machines (doubtful IMO, but he is a clever guy).

[Magluvin]

"I would like to dump the AC power-out into a resistance-load, warm water, and measure the temp-rise.  Simple calorimeter approach.  If this loading does not itself change the circuit's efficiency!"

You will have to find a resistance value that consumes the most energy and produces the most heat. There will most likely be a peak resistance value to be most eff in heating the water over a period of time.

Like if you used a say 1 ohm resistor, there might be more heat developed in the output coil, thus less in the resistor.  Or if the resistance were way too high, then very little current will be flowing thus not much heat anywhere.

Just saying, there will be a perfect value for the resistor to "match" the output capability of the output coil.  Seek and yee shall find. ;]

Mags

[Lynxsteam]

These AirCore coils will oscillate when the output is placed in H2O.  You can vary the distance of an aluminum rod and a zinc rod until you match the Hz that will match the load you are looking for.  Then measure the ml or moles of H2O disassociated into hydrogen and oxygen.  You could compare the power required to do this to the watts at input.  5-20 watts isn't much so you probably have to do this for a while. 
I ran mine for about two minutes and bubbles do form.  I could hear a slightly audible tone in the glass of water and the frequency was 6.87 khz.  The transistor started getting warm.  6.87 khz would be similar to about ten - twelve bulbs on the circuit.
I don't know if the power equivalent to disassociate water and emit light are comparable.