Joule Lamp

[NerzhDishual]

Salve a tutti,

I have replicated this Joule Lamp. One 2N3055. No diode.

In spite of a nicely (but unpurposely) botched (hand made) secondary coil
(about 640 turns; Diameter 2 cm ; Length 23 cm ; AWG #30), it seems to work!

It worked (lighted a small 6 watts fluorescent lamp) the first time I switched it on!
Then it stopped as soon as I moved in the room...

This circuit is amazing and very capricious.
It does not works each time you switch the power on.
Amp consumption: from 0.3 to 1 amps depending upon the primary "tuning"
(the secondary coil can  'slide' inside the primary).

I have also tested it with 2 fluorescent 6 W lamps.
It works even when the lamps are just plugged with one wire to the 'positive' HV side.

Pictures and  more tests to be done.

Thanks to Lynxsteam for this circuit and his precisions.

Very Best,
Jean

[Lynxsteam]

I thought it was helpful to compare different types of blocking oscillator DC converters to help people understand them better.  I'll just stick to what I am doing from now on and not reference anyone else's work.

I resurrected the smaller AirCore (the 12" long one).  I modified it quite a bit.  My goal is to make it the best it can be.  Power output is up substantially.  Brightness is very useable.  These same modifications apply to any size aircore I decide to make.

Below are results from a comparison done with the bulbs plugged into the wall through a watt meter, and plugged into the AirCore.  I recorded data for 4 bulbs and for 6 bulbs.  These were 7.5 watt Utilitech 450 lumen LED warm bulbs.
Voltage and amps were recorded for the aircore using a DMM.
Light output was recorded through a 6 volt photovoltaic panel mounted above the bulbs in a light box.
Frequency results
4 bulbs 19 khz
6 bulbs 16.9 khz

[Lynxsteam]

Here is a video I shot today.  I was supposed to go play golf with my son, but its 55 F and raining. 
I am very encouraged that the aircore is so easy to make and beats the heck out of running lights with the house grid power.
A solar panel indoors facing a window is enough to make this work.  These six bulbs require 18 watts.  My solar panel in full sun puts out 60 watts.
My light box isn't perfect so I will probably have Joule Seeker do a confirmation with his setup, if he is willing.
I don't see how there is a limit to how big and powerful this can be made, except for practicality and the 6 amp limit of the transistor.  In this video the amp draw is about 1.49 amps on 12.1 volts.

http://www.youtube.com/watch?v=ep6-hJ3kLOM

[Lynxsteam]

I received a comment on a video saying the power is too high into the LJL.  I can control the power by adjusting frequency.  The aim is to provide enough power for many many light bulbs.  4-5 watts per bulb provides very nice brightness for the 7.5 watt bulbs.  Its interesting that the first bulb draws 1 amp, and subsequent bulbs require 200 ma each.  I have added enough bulbs to drop the frequency down to 10khz and put out 40 watts.  I haven't found the limit yet.

[JouleSeeker]

Here is a video I shot today.  I was supposed to go play golf with my son, but its 55 F and raining. 
I am very encouraged that the aircore is so easy to make and beats the heck out of running lights with the house grid power.
A solar panel indoors facing a window is enough to make this work.  These six bulbs require 18 watts.  My solar panel in full sun puts out 60 watts.
My light box isn't perfect so I will probably have Joule Seeker do a confirmation with his setup, if he is willing.
I don't see how there is a limit to how big and powerful this can be made, except for practicality and the 6 amp limit of the transistor.  In this video the amp draw is about 1.49 amps on 12.1 volts.

http://www.youtube.com/watch?v=ep6-hJ3kLOM

Excellent progress, lynx.  Yes, of course, I would be very happy to do a confirmation.