Quote from: timmy1729 on January 04, 2009, 04:41:12 PM
@All

Small toroid JT: I added the diode and cap to this one and it really didn't give as much of an improvement as I saw in the big toroid JT. I think it topped out at around 1.9vdc. So, this tells me that, using identical parts, reducing the size of the toroid reduces output voltage dc.

Excellent Timmy. I like the way you work. Now we know something more. Thank you.

QuoteBig toroid JT: I remade this, keeping the windings on it. I used identical parts with the only exception being that I used the Darlington transistor( Radio Shack PN 276-2068 ). Using this transistor gave me 0.3vdc more than the JT using the 2N3904. So, before I had an output of 3.0vdc and now it outputs 3.3vdc now 
Not too much of a gain, but it's a gain nonetheless.

Hmm. Intersting oo.
I liked someone's putting a variable resistor to see that change. Maybe that would tell you something more about this transistor?

QuoteI was told to set a firm goal. So, I think I want to end up with a JT that is as efficient as possible.

.... My ultimate goal is to be able to run my air conditioner from an Earth Battery. I think using a JT or some variation of it would be useful in achieving that.

Well, this makes my goal of lighting up my house with 3 or 4 cameras look pretty feeble.

Quote

Don't get me wrong about the camera circuit and other stuff. I am playing with that as well. I'll look into whatever it takes to run my AC from an Earth battery 

These go together really well. I have hijacked my alligator clips from my Stubblefield generator AND from my HHO bubbler. I have a strong feeling that all these things we are working on are coming together.

So, Carry on. Keep up the good work and please keep bringing us the information you get from your experiments. We will be using it.

Thank you,

Jeanna

Quote from: Mk1 on January 04, 2009, 02:32:30 PMOne good thing we should do is get are terms right, [...]

A good starting point is probably Electropedia (IEC 60050) if they have something that fits (use stars like in *keyword* for searches): http://www.electropedia.org

EMF (electromotive force) is "source voltage" 131-12-22: http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-12-22
CEMF (counter- or back-EMF) is possibly "induced tension" 121-11-28: http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-11-28

Quote from: jeanna on January 04, 2009, 05:32:41 PM
Excellent Timmy. I like the way you work. Now we know something more. Thank you.


Hmm. Intersting oo.
I liked someone's putting a variable resistor to see that change. Maybe that would tell you something more about this transistor?

Well, this makes my goal of lighting up my house with 3 or 4 cameras look pretty feeble.


These go together really well. I have hijacked my alligator clips from my Stubblefield generator AND from my HHO bubbler. I have a strong feeling that all these things we are working on are coming together.

So, Carry on. Keep up the good work and please keep bringing us the information you get from your experiments. We will be using it.

Thank you,

Jeanna

Thank you for the kind words and encouragement 

Hello All . I have been following the thread and have made 6 Joule Thieves from various circuits . heres one that dosnt use windings or toroids . It uses a small inductor that looks like a resistor with color stripes on it . I got mine from an old Pc power supply . Sorry for the crude drawing as i copied it from my notebook and it is not my Circuit ..

@all

There are different type of ferrite, and get saturated at different freq(speed).

interesting film http://www.youtube.com/watch?v=PdZKxtc8cq8&feature=channel_page
http://www.youtube.com/watch?v=_sZJgQfO5wg&feature=channel
http://www.youtube.com/watch?v=UvHCQswnjEg&feature=channel_page
http://www.youtube.com/watch?v=eZDxYHEuy_g&feature=channel_page

@Timmy

play with the resistance on your darlington.