Joule Thief

[stprue]

@Jim,
That video tells the story. Great!

How many volts does your meter see from your EB?

@Gadget
bon apetit ! 

@xee. I finally remembered to order a couple of those ger transistors from the gadget. Thanks for reminding me.

@Altrez,
Love those empty volts. Keep it going.
It always makes me think of the emperor wearing no clothes...

@Bill
me too. this was a fast mover last night.

jeanna

I must have missed the video, what page is it on?

[stprue]

@all

Long time no post.

This is a schematic of a self charging Joule thief. The  battery runs the JT and the JT charge the battery back some points below its original starting voltage maintaining a balance indefinitely.
But if you add an LED it does not light.
It does not discharge the battery either.

Can you test it?
If it works as stated.
Can you improve it to work with a pickup coil that uses the same energy used by the original circuit and at the same time lights something?

I know that you have done it. I mean the pickup coil that uses no more energy than the one spent by the original JT and lights something for free.

Thanks in advance and congratulations to all that have had a successful replication of any kind of joule thief from this topic.

Jesus

Some food for thought, if this design is resonating can't we tap into the noise and convert to energy?  I know it would be a very small amount but it seems possible!

[stprue]

@ALL

I had a major brake though! I have the JT in what looks to be self oscillating / resonating mode! Here are my notes with how I found it.

Thursday, May 28, 2009

This morning when I left for work. I adjusted the 10k Pot to what I can only describe as resonating or oscillating mode.
Watching the meter and adjusting the pot I found a sweet spot where the voltage would
jump up and down about ever few seconds. form 0.003mv to 2.013V those are ruff estimates. I am using
a TIP31 a Large coated Toroid rated at 5000 permeability a 10k pot and a small ceramic capacitor. I have a diode bridge that is connected to one pickup coil.

I have also noticed with this circuit configuration that I call the "LLA1" the main battery is slightly recharging itself as well.
/end notes

So that is where I am so far. The battery is charging faster and it seems to be drawing less energy to charge.

More to come!

-Altrez

I'm not sure what your voltages mean!  Do you have a load or is that a supercap reading or is that some reading you're getting messing around with the POT and not getting high voltage but that fluctuating voltage?

[stprue]

. Hmmm . WE all i can say is the transistor i use are Mill Sec Us army and Rare . I test each one. As you know i am helping in a funded project for ASRF in The Black Hills and Date Recorders are being used along with Scientific Evidence of the Earth Battery .. We are not allowed to use Germanium Transistors for earth Battery because this has to be totally replicable, part have to be readily available   and cheap . All My jts are using 2n3904 and 2n2222a can for the Eb project . some results were posted for altrez on My weekly  test . earth battery will produce over 1 volt using the proper materials . We are using eco friendly materials as  to not harm the environment  . We don't use lead cadmium etc.. I sell the germanium transistor for the low power jt projects to individuals that wan to run their Jt on a low output eb . A germanium requires that the toroid be would different . More turns on the primary ,lots more . The Frequency is not near the 2n3904 . once a good primary is wound then the ger transistor will perform as expected of  a germanium . Low input high gain . I personally have several Germanium Jts but there data is already posted . .20 volts .20 Ma. . with tweaking i can run on one .16 volts My eb put out close to 2 volts as high as 12 ma sometimes . Normal is 1.1 volts at 3-5 ma . You have to use a proper electrolytic in parallel with any eb . Mine is 3300uf 10volt low esr

Gadget

Gadget .

I did not know any of that info so thank you for responding

[stprue]

@all,

I think that lighting LEDS / Neons / CFLS form a JT is cool but what I am finding even cooler is that it makes one heck of a charging circuit. I think the LLA1 is going to be a sustaining charging device.

To drive / push my main Toroid configure 5 2.9" Toroid's all connected together.

I am now charging a small electrolytic cap with the same battery that is charging the other battery. This tells me two things 1. that I still have room to harvest energy and 2. That once I add the micro controller for switching it should be hands off

I want to thank you all for the great support!

Take care!

-Altrez

I must have missed this... what is a LLA1?