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Author Topic: Joule Thief  (Read 5876926 times)

Offline hartiberlin

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Re: Jule Thief
« Reply #15720 on: November 24, 2012, 01:50:55 PM »
Well done to all experimentors, Gadget, Sohei, TK , Groundloop and Hoppy and all the others...

Did anybody yet try to see, how the waveforms look at the primary of the transformer
at the Lasersabers Crossover circuit ?

Isn´t there the chance to blew the driving 2N3055 transistor from the backspikes when the transistor
switches off or what is happening there ?

I guess we really need the right transformer to get it all to work like in Lasersaber´s setup.

I guess this is really the key to the success..

Have to get some new transistors first next week, so I can better tinker with it and
have to wind another 100 turns on my toroid core to get 200 turns, as I only have 100 turns
as the secondary.
TK shoed it nicely how to wind such a toroid more easily in one of his last videos... Many thanks for this....!

Have a nice weekend !

Regards, Stefan.

Offline Groundloop

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Re: Jule Thief
« Reply #15721 on: November 24, 2012, 01:53:24 PM »
I have now tested a number of easy to wind 'open' transformers using ferrite rods and none can meet the performance efficiency of my 'E' core transformer. As Groundloop shows, a high value resistor between collector and base of the 2N2222 (or an MPSA06) transistor can help to provide just enough positive bias to trigger the circuit into action. My circuit will start automatically with a 7W LED but not with a 3W LED.

I cannot get the lasersabre diode and magnet mod to work. It stops oscillation on my setup.

Hoppy

Hoppy,

What is the size of you Ferrite core? And what number of turns did you use?

GL.

Offline Hoppy

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Re: Jule Thief
« Reply #15722 on: November 24, 2012, 02:09:54 PM »
Hoppy,

What is the size of you Ferrite core? And what number of turns did you use?

GL.

GL,

L=45mm, W=40mm, D=12mm. 20 turns 0.5mm ECW on primary. 250 turns 0.3mm on secondary.

Regards
Hoppy

Offline Groundloop

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Re: Jule Thief
« Reply #15723 on: November 24, 2012, 02:15:15 PM »
GL,

L=45mm, W=40mm, D=12mm. 20 turns 0.5mm ECW on primary. 250 turns 0.3mm on secondary.

Regards
Hoppy

Hoppy,

Thanks, I will see if I can find one in some of my old computer PSU.

GL.

Offline gadgetmall

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Re: Jule Thief
« Reply #15724 on: November 24, 2012, 04:20:56 PM »

    http://youtu.be/tdmgDIWtDpM

here is my last one and i let it run all night . It is still fully charged . i trigger mine with a tap from a ground now .LOw input Lasersaber CrossOver Circuit .. I could not get the diode magnet to work but this will trigger with a tap of a ground now so no resistor needed . I let it run all night long and the battery is still fully charged .!  Thats is a 220 volt Led bulb and the power supply is  1.2 vols dc . the Transformer is a little ferrite choke from a computer and wound with 300 turns secondary #26 and 27 or 28 primary of #22 .super glue helped hold the wire from common of the edges and tape over it .   the transistors are MPSA05's

Offline gadgetmall

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Re: Jule Thief
« Reply #15725 on: November 24, 2012, 04:21:25 PM »
Groundloop Nice Boxed energy Device . this one is going in a little box too. I got it to trigger with a ground tap on the positive input wire to something that is plugged in to the mains . it stays lit down to .5 volts running the bulb with the same brightness . THis particular 220 volt LED bulb is rather dim on the regular mains . As i bought it from China and thought it would be a nice light but it is a 220vac . This circuit lights it up brighter that the mains .
I forgot to mention that this Bulb will light also with just one wire however it it not High Voltage . Weird but it does work with the opposite secondary disconnected from the PIGTAIL  ..
When i get some more 2n3o55's one day  and a different transformer i will give it another shot but i am happy with the very low power this takes, as low as .5 volts with  the same brightness, I almost got it with the tiny homemade core . It will be a matter of winding one wind at a time to get this circuit at a 0volt input to run those transistors from the cap. . i am trying a few 2 foot magnesium and carbon rods today to see if it works . .
I think you can use ANY NPN transistor even scrap ones from some old electronic boards . I want to try some germanium transistors i have so i cut a few more pieces of PC hook up board to try different ones.
the last one i put it on an AA battery almost depleted .6v and it triggers with a touch and gets really  bright if i attach the pos  wire clip to ground or any object that is plugged in .Although is still is not exact but it will flash for a few seconds on the cap only . Close ..
« Last Edit: November 24, 2012, 06:06:28 PM by gadgetmall »

Offline ALVARO_CS

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Re: Jule Thief
« Reply #15726 on: November 24, 2012, 09:39:56 PM »
hello all
Groundloop: I replicated the lasersaber crossover circuit as per the schematic you posted before.(except the solar)
Used a 650K resistor (could not find a 1M)
Transformer from an old Siemens cell phone charger (in AC 230V - out DC 4.5 V- 0.6A)laminated.
Lights a chinese led lamp (30 leds) 230V - 2W from a Li-Ion batt. 3.7 V

Planing to feed it with four rechargeable 1.2V.
and will continue experimenting, fascinating circuit (also thanks to Gadget, glad you are back here)

Thanks
cheers
Alvaro

Offline Groundloop

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Re: Jule Thief
« Reply #15727 on: November 24, 2012, 10:02:16 PM »
Groundloop Nice Boxed energy Device . this one is going in a little box too. I got it to trigger with a ground tap on the positive input wire to something that is plugged in to the mains . it stays lit down to .5 volts running the bulb with the same brightness . THis particular 220 volt LED bulb is rather dim on the regular mains . As i bought it from China and thought it would be a nice light but it is a 220vac . This circuit lights it up brighter that the mains .
I forgot to mention that this Bulb will light also with just one wire however it it not High Voltage . Weird but it does work with the opposite secondary disconnected from the PIGTAIL  ..
When i get some more 2n3o55's one day  and a different transformer i will give it another shot but i am happy with the very low power this takes, as low as .5 volts with  the same brightness, I almost got it with the tiny homemade core . It will be a matter of winding one wind at a time to get this circuit at a 0volt input to run those transistors from the cap. . i am trying a few 2 foot magnesium and carbon rods today to see if it works . .
I think you can use ANY NPN transistor even scrap ones from some old electronic boards . I want to try some germanium transistors i have so i cut a few more pieces of PC hook up board to try different ones.
the last one i put it on an AA battery almost depleted .6v and it triggers with a touch and gets really  bright if i attach the pos  wire clip to ground or any object that is plugged in .Although is still is not exact but it will flash for a few seconds on the cap only . Close ..

Gadget,

Nice little circuit you have there. I think it is important to wait for LaserSaber to provide more information about his
transformer so that we can find out what is powering his circuit when he used the roof as an antenna and the ground
connection. As I understand it, he disconnected the main cable from his house to his lab area and still manage to light
his circuit. But anyway, this circuit of his is great for battery powered light.

GL.

Offline Groundloop

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Re: Jule Thief
« Reply #15728 on: November 24, 2012, 10:09:08 PM »
hello all
Groundloop: I replicated the lasersaber crossover circuit as per the schematic you posted before.(except the solar)
Used a 650K resistor (could not find a 1M)
Transformer from an old Siemens cell phone charger (in AC 230V - out DC 4.5 V- 0.6A)laminated.
Lights a chinese led lamp (30 leds) 230V - 2W from a Li-Ion batt. 3.7 V

Planing to feed it with four rechargeable 1.2V.
and will continue experimenting, fascinating circuit (also thanks to Gadget, glad you are back here)

Thanks
cheers
Alvaro

Alvaro,

I have found that I can adjust the light in the LED bulb (and thus the current usage of the circuit) by varying the resistor value.
If we use a very high (around 5M Ohm) resistor value then the circuit will use very little power and we could then use just
a small transistor for the switching. But the real interesting part is how LaserSaber was able to light his circuit with just an
antenna and ground while he had his lab disconnected from the mains. Not enough information available yet to find out.

GL.

Offline Groundloop

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Re: Jule Thief
« Reply #15729 on: November 24, 2012, 11:52:40 PM »
Hi,

Today I did test the Joule Ringer CrossOver circuit on a Metglas AMCC-32 core.
The circuit runs well, but I still need the high Ohm (5 mega Ohm) resistor for the circuit to self start.
At 9 Volt input the circuit uses 0,16 Ampere to light the 3 Watt LED lamp to a OK brightness. (Not full.)

GL.

Offline verpies

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Re: Jule Thief
« Reply #15730 on: November 24, 2012, 11:54:11 PM »
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.

Offline ALVARO_CS

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Re: Jule Thief
« Reply #15731 on: November 25, 2012, 12:40:04 AM »
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

Offline gadgetmall

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Re: Jule Thief
« Reply #15732 on: November 25, 2012, 06:18:17 AM »
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
« Last Edit: November 25, 2012, 04:19:58 PM by gadgetmall »

Offline TinselKoala

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Re: Jule Thief
« Reply #15733 on: November 25, 2012, 06:58:20 AM »
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.



Offline TinselKoala

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Re: Jule Thief
« Reply #15734 on: November 25, 2012, 08:08:56 AM »
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