Joule Thief

[verpies]

I have no power lines or radio station nearby so this is pretty amazing!

Up until now I have been ignoring your circuit, because it seemed like you've tuned into the RF field of a strong radio transmitter or into the near field of your shed's power wiring or into a near field of an underground power cable, etc...

Those concerns could disregarded if you made your setup portable so you can drive with it far away.

Also, how much DC power do you need to light that LED light bulb with the same brightness?

P.S.
It is important to use pure DC for this power measurement.  With pure DC you can multiply Volts*Amps to calculate power credibly.
With non-DC power supply (e.g.: PDC or AC), the power calculation stops being credible unless other waveform factors are accounted for - but why complicate the matter.

[ALVARO_CS]

Groundloop: I was thinking to feed it with the RomeroUK bat charger (very simple) got some 5V with it.
but I also will wait for a further development.
Alvaro
edit: may post it here if requested

[gadgetmall]

Well my setup is now hooked exactly like Lasersabers  crossover with the diode/magnet  feeding the cap/AA battery  It is increasing in voltage again except this time is was a depleted battery so it is NOT battery recovery .   i am getting the casmeir effect or there is energy recovery going on in the air  as it is not hooked to anything external at all .. It wold kill the oscillation with just the diode so i hooked a 5mm clear led parallel and  it is at that balance and lighting the 22ovac bulb AND the white led diode . This is generating more power off the load side and is enough to charge a cap and battery .

SO groundloop i used his diagram with  the magnet and my diode/led(lit) and one more modification . a .22 capacitor between the other load lead to the positive rail . It works great  . just checked the battery and that .6 battery has climbed to 1.239 volts . It is enough to convince me a ground rod and an air antenna will power my circuit mods . You have to TUNE your coils with capacitance .Also i have longer wires on my Bulb connects .

you guys are using to much power to see this effect if your input is above the trigger voltage of your transistor . In silicon transistors its about .4 volts   . In my case using two MPSa05's its some where at .6 .

When you get it to oscillate at that low voltage and light your load and your diode looper  with coil  tanked tuning  you will see it take energy from the environment be it static from a rooftop and copper earth ground  or just static and electromagnetic waves from the air .

This is My prize build and i am waiting for a nice case to mount it in . i want screw terminals on the outside for ant/ground input and ,y led/diode configuration will be the on indication  with the LED bulb socket ..

I used my capacitor box to select the proper cap for my coil . That made it easy .. Resistors are also just killing the effect if you use them and your energy is wasted in heat.

tomorrow i will do a few more test / I want to see if the battery tops out at some point because of the frequency changes with voltage . If it starts to go low again i want to see that point . I already know it accumulated below .622 volts . I bet there will be a point when it peaks and drops. then peaks  and them drops .
If so this is perfect as it stands.
Gadget

Gadget

[TinselKoala]

FWIW......  a rather long demo, sorry about the light... YT seems to have pixelated this one more than usual too, but at least I use a tripod for the latter half of the demo...

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

Don't be fooled by the single tiny LED I'm using in this video .... this circuit in "JTmode"... without the diode or the earth ground connection.... will pop LEDs and transistors like crazy with the input voltage cranked up.

[TinselKoala]

Battery voltage climbing? I'm not sure if this is the same thing that gadget is seeing but it came about from putting a cap in the place he said..... I just used a 1 uF poly film cap that was on the bench.... this was one of those "whoopee" moments for sure; when I first touched the cap into the running circuit and saw the voltage go up by 200 mV in a few seconds and still climbing ........ but then I calmed down and started thinking about it.....

Video still uploading, will be ready in moments.
http://youtu.be/JMtF78stMS8



By the way, I came across this website a few minutes ago, might be of interest, sorry if it's already been posted somewhere.
http://www.pavouk.org/hw/lamp/en_index.html