Big Joule Theif

[Magneticitist]

bedini JT

you know if you dont want to have to take forever winding recoveries on toroids you can just wire a regular bedini SG circuit set to oscillate from 1.5v and give that the recovery winding which is a lot easier.

YouTube - SS Bedini Joule Thief

im using regular steel as the core on this coil.
im sure there may be an influential difference in doing this but from what i can tell it works the same.. i cant light a floro simply because i dont have enough turns on the recovery, but i can light about 5 neons bright in parallel maybe more.

any ideas as to what the differences really are between this and a normal JT?

[Tectalabyss]

Enjoyed your video.

you know if you dont want to have to take forever winding recoveries on toroids you can just wire a regular bedini SG circuit set to oscillate from 1.5v and give that the recovery winding which is a lot easier.

YouTube - SS Bedini Joule Thief

im using regular steel as the core on this coil.
im sure there may be an influential difference in doing this but from what i can tell it works the same.. i cant light a floro simply because i dont have enough turns on the recovery, but i can light about 5 neons bright in parallel maybe more.

any ideas as to what the differences really are between this and a normal JT?

Hello Magneticitist.
I Enjoyed your video and sounds like a good Ideal Has for your question I am NOT Sure. Thanks for the Vid. Tec

[Tectalabyss]

Vaporizer

Hello Vaporizer.
Hope you are feeling better.If you have the time can you please buy this coil from BG micro pictured below.When last I looked it was 1.95 each They are 3 inch OD.I have a few of them and they clean up nice I have two that I am testing JT's on but can only do voltage tests and I thought since you had a scope you could run some tests and tell me how they do if its not to much of a bother.Thanks. Tec

[Vaporizer]

I saw those Tec. If its just a bad brightness control on my scope I'll try a few.

[NickZ]

Guys:
This is a link to the big ferrite toroids, with their values for permeability.
This was past along by Osiris at OU.com.
Ferrite Toroids | Magnetics®

[Tectalabyss]

Thanks

I saw those Tec. If its just a bad brightness control on my scope I'll try a few.

Hello Vaporizer and All.
Thank you I appreciate it.
@NickZ Thank you for the Link very helpful. Tec

[Vaporizer]

Hi NickZ & all,
Thanks for the links. I've seen cores listed and some do not adhere to the standard we see in this chart. I prefer seeing the "J" & "W" with the permeability ie "W=10,000" listed this way. Let's not forget the "H" @ 15,000. From what I've read the "H" isn't that popular to find and are costly. I'd still like to try one if it's 3X a "J". lol I wish I knew the permeability of many thing I've tried that have worked so well. Finding data on things like a Fuji transformer...pretty slim from what I've found looking. They still amaze me for their size vs output.

Some places reference permeability using the "AL" number. Like AL is 6.3 permeability? I haven't seen a comparison that appears to be a standard although I'd expect one to exist. Maybe just some simple thing I've missed. If anyone finds or sees the calculation to get from one to the other, I, and I'm sure many would appreciate it.

Agn, nice link. That one gets a bookmark for sure.

[NickZ]

@V and All:
You're welcome. And my thanks goes to Osiris (IST), for sharing his finds. He is also the one that came up with the toroid tuning method that I sent the link from, a few posts ago.
He mentioned that the big 10000u cores may cost up to $100 per core, but that the company also give a free sample. I think that you have to e-mail them to get a current price quote.
Anyways, like Jeanna mentioned, it's all about permeability, and tuning, if you want see some great results.
I'm still working on the Captret - Jt circuit.
So far its been pretty interesting... I'm still plugging away at it, though. It's too early to know (for me) if there is any real SUSTAINABLE juice flowing between them, yet. I think that the open Captret circuit that Lidmotor came up with, may be what I'll also be trying next.
A captret-Jtc with an antena and a ground connection. The metal capacitor cans and also the metal battery cans may work similar to antenas, when they are all connected together,and connected to a ground.
What signal would they be pulling in? Aether...
NZ

[Vaporizer]

Hi all,
Here is an example of what I was referring to.
http://www.micrometals.com/parts_index.htm
T106-2 AL=13.5 +/- 5 %
T106-45 AL=125 +/- 5 %

I'd thnk the 125 is better, but there is no table I can find that shows the permeability Like a "W" = 10,000 to this AL value.

Anyone?

[Tectalabyss]

Hi all,
Here is an example of what I was referring to.
http://www.micrometals.com/parts_index.htm
T106-2 AL=13.5 +/- 5 %
T106-45 AL=125 +/- 5 %

I'd thnk the 125 is better, but there is no table I can find that shows the permeability Like a "W" = 10,000 to this AL value.

Anyone?

Hello Vaporizer and All.
@Vaporizer.I believe you are right. I can't get the link to open I tried a few time's no luck.
@NickZ.
Looks like you've been busy. keep us posted. Tec

[Vaporizer]

Lets try it this way
Micrometals - Iron Powder Cores

[Jbignes5]

He has a nice app...

Download the Inductor design software and you can input anything about the inductor of your choice to see if anything they make will match your requirements. It's a nice little app that can and will tell you everything about the inductor before you buy it.

By far it is the best little app I have seen for inductors of the toroid design.

[Tectalabyss]

Thanks to both

Lets try it this way
Micrometals - Iron Powder Cores

Hello All.
I would like to thank Vaporizer & Jbignes5 for the Link and the download tip both are very helpful and on the same website.Added to my favorite bookmark's. Tec

[Vaporizer]

@ Jbignes5,
It is a nice app, but it still leaves information holes when you are making one or trying to make the best one you can from scrapped or surplus ones. Most won't have any details available. Some occasionally have a part number tht can be referenced.
IMHO that's where IST's method of evaluating what you have by a few windings stands out. If one were building as a product to sell that would be invaluable. But, that actually goes against the original principle of open source sharing, using what is "on hand" from salvaged and such. Posted info from sources found is just as important. I recently read that the toroid from a cfl base was powdered iron not ferrite. This makes it very inefficient for our use and requires many more windings. Jenna had approached a company about "W" types, I don't remember the size, but if memory serves me correctly they were going to run abt $35 ea.

The pretty tan one I have pictured earlier may not be as good as anticipated. Manufacturers don't have a standard on color coding. I did get them reasonable but can the 3" one make a Jenna's light as Lidmotor did? I begin to wonder as I found the company that makes them are powdered iron for tan. So, low permeability. Are they useless, no, they will work but will probably take more windings and not be as efficient. Electronic Goldmines 5 for a $1 gets rave reviews from many. I have 15 of them. Somewhat size limited at some point, but they can be stacked or chained together.
I guess it all depends what the experimenter wants to do or spend.

[Jbignes5]

No no no....

@ Jbignes5,
It is a nice app, but it still leaves information holes when you are making one or trying to make the best one you can from scrapped or surplus ones. Most won't have any details available. Some occasionally have a part number tht can be referenced.
IMHO that's where IST's method of evaluating what you have by a few windings stands out. If one were building as a product to sell that would be invaluable. But, that actually goes against the original principle of open source sharing, using what is "on hand" from salvaged and such. Posted info from sources found is just as important. I recently read that the toroid from a cfl base was powdered iron not ferrite. This makes it very inefficient for our use and requires many more windings. Jenna had approached a company about "W" types, I don't remember the size, but if memory serves me correctly they were going to run abt $35 ea.

The pretty tan one I have pictured earlier may not be as good as anticipated. Manufacturers don't have a standard on color coding. I did get them reasonable but can the 3" one make a Jenna's light as Lidmotor did? I begin to wonder as I found the company that makes them are powdered iron for tan. So, low permeability. Are they useless, no, they will work but will probably take more windings and not be as efficient. Electronic Goldmines 5 for a $1 gets rave reviews from many. I have 15 of them. Somewhat size limited at some point, but they can be stacked or chained together.
I guess it all depends what the experimenter wants to do or spend.

I wasn't referring to anyones process. There are a great many here who have figured out the best way to use rehabs (old stuff).This is just what I saw when buying a new core from these guys. Since my project will be dealing with huge sized toroid forms I thought it was of topic for this conversation. Although it has gone way to the left and right lol it is somewhat relevant.

I do agree that most are way too expensive. Has anyone tried black sand in toroidial form? Even if we have to condition the toroid when being set by the epoxy I would think the black sand route would be best. Even though we have to make our own molds and energize a coil around the toroid while it sets I bet the black sand would make a much better core for toroids. Hmmm... It has me thinking now rofl...