Joule Lamp

[b_rads]

@Lynxsteam:
Due to the fact that I am one of those guys who has to try something to prove it does not work, I am planning a quick build of the LJL this weekend, I will wind on a piece of black iron pipe.  Will let you know next week how stupid I feel when this does not work.

To really find yourself - you have to play hide n seek alone.

Brad S

[NickZ]

  Lynx:
   Great explanation, and goals.
   In order for the aircore to be more effective than E-core, at induction,  it may have to be of a certain size. The bigger the better, to a degree.
   I'm trying to incorporate the Exciter type circuit, here,  onto this idea, somehow.  As I feel they are related, like brother and sister. 

  As the Exciter circuit can also work like a transmitter/receiver , with Leds receiving the signal, or CFLs, or the Florescent type bulbs. Even the incandescent bulbs will work. And that same wireless signal can also be partially spread throughout the house, by using some repeaters, or even just on a short one wire transfer.
  Any ways,  that's the plan, Sam.    I'm, just a bit behind you all,  but I'm getting there.
As I'm on "Jungle Time", and the salt water fishing has been good...
  It's always interesting,  even just watching to see what others are doing, as that can save me some time, and effort.
    Picture of the beach in front of my lot...

  NickZ

[NerzhDishual]

Hi witty, clever, patient and conscientious experimenters,

Sorry for disturbing.

In spite of a botched secondary? (=the one with a lot a turns) coil, I'm able to run this amazing
Lynx Joule Lamp while drawing not too much amps (less than 1/2 amp). It is just a first attempt.
I only use 6W fluorescent bulbs.
I do not notice too much amp consumption increasing when adding a bulb.

Anyway, thanks again to 'Lynx'.  I'm now able to amaze my friend with this magical device.
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Previous (Lux meter) measurement with a mere Joule Thief shown that this CCT was more than twice
Efficient than the 'brute force'.
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Using only one transistor is very very smart and (too elegant?), indeed.
Perhaps, one 'well placed' potentiometer could be of any help (current consumption-wise?)
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Now, according to some datasheets, this very 2N3055 transistor has an hFE between 20 and 70.

Fortunately? (for once?) one of my 2N3055 has, according to my small 'intelligent?' Transistor tester,
an hFE of more than 250!
http://www.selectronic.fr/testeur-de-transistors-autonome.html
I used this transistor...

Does this huge unusual hFE could explain anything?
----------------------
BTW: If you want to recharge big batteries with small and cheap solar panels, what about using these solar panels
to just recharge one small battery and to use this small battery as an input to a Bedini SSG?
This Bedini's SSG will be able to recharge your big batteries. Please be patient.

Just my 2 cents.

Very Brest,
Jean

PS: Plijout a ra din c'hoari a-wechoù

[Lynxsteam]

@ Team

Undaunted, I press on.  I am encouraged to keep trying by your efforts and ideas.  I hope I am an encouragement for your efforts as well.

I tried the iron wire secondary underlying the copper secondary.  Amazingly enough, and trying every configuration of series, parallel, iron wire out of circuit in circuit, the best result was exactly the same as the LJL Aircore power draw and less brightness.  I look forward to LaserSaber/  Lidmotor and others letting us in on the interesting effects they see.  Obviously I missed the right way to utilize the iron wire.

I tried the thin steel mop handle tube as a core.  Bad idea!  Low brightness and transistor got really hot.  Low frequency, high amp draw, low voltage.  There is a reason manufacturers make ferrite composites.

I have made a lot of these Aircores now, and I have one in particular that stands out as a good performer.  It has two layers of secondary with no tape between.  1360 total turns Secondary 30 awg.  The primary is a small gauge bell wire with 130 turns for a 10.46:1 ratio.  This is on the 3/4" PVC and the wound length is 8.5"  I don't know why, but this one shines.  A single 7.5 watt LED bulb lights the interior of my garage.  It does draw .875 amps with one bulb at 12.3 volts = 10.75 watts, but if you want full bright this one does.
A 3 watt Philips LED draws .530 amps x 12.3 volts = 6.5 watts.  But this bulb always is an amp hog.
Its not efficient but it is bright.

I'll pin down the specs on this aircore more tomorrow.  Hz, amp draw for multiple bulbs etc...  Maybe I can rewind it to get closer to 10:1 ratio and see how that goes.  Could also be that the length/diameter ratio is important as well.  I'll nail all this down and publish so you can replicate.  This one is the closest to E-Core performance.

[Lynxsteam]

Update: I couldn't go to bed without looking at this aircore some more. 

Brightness is really good on this one.  I tried a few other primary spots and brightness doesn't apparently change.  I know that is dangerous to go by eye.

With one Utilitech 7.5 watt bulb I can drop amps to .75 at 140 turns, .398 amps at 180 turns for a 7.5:1 ratio.  Now we are talking!

The only thing I can see that is substantially different from other aircores is that the diameter is small.  Maybe this concentrates the magnetic field more strongly.  I wonder if an even smaller diameter and longer length would be even better.  Perhaps making the aircore on a pliable tube and bending it into a circle.  Instead of the field lines having to go out the ends and circle back around the exterior, the field would just go back and forth within the coil.

So rather than go big in all dimensions perhaps going long is better.