Joule Thief

[innovation_station]

Here is a video of a little joule theif with a transformer attached to it.
You can allso add more coils or transformers to it.

This can allso be done with the big joule theif.

http://www.youtube.com/watch?v=KkAlPWw3DKI&feature=channel_page

i have 8 mots we could use on the big unit ...  off of the piggy back pick up coils all 4 x 8 of em   or for now i will keep it in its simplest form ....


your exact  unit but polorized  coils .. then we add to it 

ist!

coil pic ...

[Pirate88179]

@ Gadgetmall:


Just for your information, I read that the "colored" toroids are not ferrite, they are powdered iron.  Does that really make a difference to us? I don't know.  In the several power supplies I took apart, they used both the ferrite cores and the powdered iron cores.  I guess it has to do with what MK 1 said a long way back, they all have different properties and when they design a circuit, they pick the one with the properties they need.  I have a green powdered iron toroid I got from a cfl board.  When I can get some more transistors, I will make a JT and see if it seems to work the same.  Hey, if I use the same wire, and the same wraps as my other one (in the radio tests) and the same transistor and resistor, I can repeat my radio test and see if it has the same sound, or different.  I can compare them this way.  I really wish I had a scope.

Bill

[Pirate88179]

@ All:

While waiting for my shipment from Electronics Goldmine (solar cells, ferrite toroids, etc) which is due in tomorrow, I had another thought.  Besides attempting to run the JT from my earth battery to light some stuff, I was thinking of building one of those small turbine style wind generators made from a 2 liter bottle.  Since the wind still blows at night and it takes very little wind to turn these units quite fast, I was thinking that if I can get the base 1.5 vdc from it to run the JT, I can have outside lights powered by the wind also.  Just another idea.  I wish I had more time and more money.  Great work here everyone.

Bill

[gadgetmall]

@Pirate
    If those meters you showed a few post back were showing your Earth battery out put then there is no way they won't run several Jts . Im running 2 NOW and my volts is only 1.08 current 1ma .they are lit now even covered in snow .(the electrodes not the circuits _there in the house Have you tried using a capacitor across the input ??

[Pirate88179]

@ Gadgetmall:

Those shots were taken well over a year ago in the beginning of my experiments with the earth battery.  I would have to dig out my numbers but I believe I was up to 2.2 vdc and about 80 mA's.  Still a little light in the mA's area to match up to an AA battery.  I remember the 2.2 vdc number because a lot of folks told me this was just a galvanic reaction.  Well, if that was all it was the limit would be, as we know, 1.5 vdc.

Once the ground thaws out a bit here, I am going to test the JT on it first thing.  I put a supercap in series with the led but that is all I had done with a cap in those experiments.  It charged the cap while lighting the led and then, I could remove them from the earth battery and take the led inside where it would remain lit for several hours.

I hope to use my new 10F supercaps in a similar manner with both the earth battery, and my solar cells.  (2 different experiments)

You beat me to it by hooking the JT to your earth battery.  Great job though, I was confident it would work.  some of my electrical friends told me JT's only work with batteries but when I made the video showing one operating from a supercap, well, I knew they were wrong and the earth battery should work also.  And, you proved it did.  Great job!

I studied the earth battery quite a bit last year and I believe I can help you get your volts and power up.  PM me if I can be of service in any way.  This is going to be a fun spring isn't it?

Bill