EER Joule Thief using an earth battery to start a joule thief.

[stprue]

OMG it works!
I feel like little Annekin
"IT'S WORKING! IT'S WORKING!
Here is a still pic.

jeanna

Thanks to Freepow for sharing that his earth battery required a zero resistor at the transistor base.
As soon as I shorted across the base resistance, the light went on.

BTW, this is my germanium transistor joule thief.
I have been using this to test the recharged batteries.
I guess I need a new joule thief! 

edit
More fiddling and it works just fine with 1k ohms!!

To work in harmony with nature is an achievement!  Awesome job Jeanna...inspirational   

[jeanna]

Oh Jeanna, can you post a little schematic of what you are doing with the circuit?  Have you tried trusty silicon 2N2222a (or other), or was it necessary for you to go Germanium to drop the forward voltage tax?  If so what did you use (AC185-NPN)??

Hi E Goose,
I was away this weekend.
When I returned the light is still ON!!!!!

I fixed up a basic jtc schematic to show what this is.
I had made this to work an EER last summer.
It didn't so it was in the shoebox.
But this schematic reflects what the circuit is. You might see other things there, but this is what is being used.

In a quick trial on saturday, I tried a jtc which uses a TIP31. This did not turn on. I didn't fiddle with it any more but I will now and let you know.

For now, this is still working 70 hours later.
hmm, pretty good compared to a AAA, or AA

Here is the schematic.

jeanna

[Pirate88179]

I love it!  Jeanna's Mushroom/Philodendron circuit.

Excellent work Jeanna, as usual.

Bill

[ElectricGoose]

Hi E Goose,
I was away this weekend.
When I returned the light is still ON!!!!!

I fixed up a basic jtc schematic to show what this is.
I had made this to work an EER last summer.
It didn't so it was in the shoebox.
But this schematic reflects what the circuit is. You might see other things there, but this is what is being used.

In a quick trial on saturday, I tried a jtc which uses a TIP31. This did not turn on. I didn't fiddle with it any more but I will now and let you know.

For now, this is still working 70 hours later.
hmm, pretty good compared to a AAA, or AA

Here is the schematic.

jeanna

Thanks Jeanna, ur a honey for that kind assistance!

Hmmm,  I already have the supercap at the front like you are doing acting as a resevoir (but it's draining) and I thought you might be doing something special with the circuit itself (wiring) but no, therefore it must be my transistor drinking too much as suspected.  I shall buy a germanium number and see if I cannot dilly the pickle.

Kindest

E-Goose

[jeanna]

I love it!  Jeanna's Mushroom/Philodendron circuit.

Excellent work Jeanna, as usual.

Bill

Thanks Bill.

@E-goose,
Actually, it is not necessary to have that cap in there. And, it may even drain as you are supposing.

------------
All,
I just tried another circuit and this one has 2 secondaries (a very early circuit. I think I called this the berry, but maybe that is a different one)
It uses a 2N3904 silicon transistor and a string of trim pots that add up to something less than 1k... I think.
I will make a drawing and post it in a moment, but first I want to post this pic of it... the Mushroom Philodendron er...Cu,Mg EB with 2 LIGHTS!!