Big Joule Theif

[kooler]

3rd stage

i made a small video again to show you guys some thing interesting ... well i thought it was..lol

YouTube - joule thief w/3rd stage

no sparks this time ...sorry

[CosmicFarmer]

more scramble

Im sorry to get hung up on this one specific part but I'm still obsessing over scramble windings.

Scrambling your "secondary" is what Jeanna suggested (right?) however I also scrambled my primaries too....... Every time I wind a coil I get hung up on every little detail ... Capacitances between wires, Field directions, clockwise counterclockwise...


@Jeanna
Would you recommend scrambling your A+B winds?
I am thinking that doing so, the field as its being generated would be weakened, but its all going the same clockwise direction so it might not matter. Maybe I am thinking too hard...
(I hate it when people say I do that! I usually tell them they aren't thinking enough.)

Hahahah I'll shut up now and finish what I was doing.
Cheers

[Inquorate]

And now for Impedence matching

Sorry for the reply spam but I cant edit my message any more

@Jeanna
"Scramble wound" Sounds interesting! thats like how I wound my layers too. groups of 15 with equal sized space for return path. 4 layers and with insulation tape.

Right now I have 40 winds both A and B.... Would removing 90 % of one wind help in any way other then less copper onboard? I had my mind set in "Electrical Engineer mode" thinking high inductance and many wraps would equal a strong grip on the toroid but it seems all the toroid needs is to feel the oscillations, and like a SEC transmit it efficiently through the medium to a monster recovery wind. The next one I make will have your 10/1 ratio.

@Inquorate

I agree with your statement about the relationship between frequency and volts. I thought previously that since battery amps can not increase as Hz increases, thus less power per pulse(which IS happening) but that alone would not count for the obvious sweet spot when you are tuning. I made a short video illustrating this power reduction with frequency increase and sweet spot with my Christmas colored JT.

YouTube - Resistance vs Light output
Nothing fancy and I didn't edit it any.

I find it interesting Jeanna is resonating at such low resistances.

Also, I found if you use a secondary (third wind) with a load, then you can remove the LED load or whatever is in its place and the voltages will skyrocket on the recovery wind.

Having a JT hooked to a SEC in place of the normal LED spot, and a LED on the recovery wind is an Either/Or situation for me. Turn on the SEC, off goes the LED. Turn off the SEC, On comes the LED. The SEC works better hooked to the A+B wind pair instead of recovery wind, but both work fine.

More theory, but here it goes... Add a resistor to your xmas light led string, and the 'sweet spot' should shift a bit.

I think of Impedence as like a car exhaust pipe; without the exhaust the engine has no back pressure, and loses power. With too much constriction in the exhaust the car loses power.

Perhaps inductors between groups of LED's lowers Impedence as well as reintroducing particular frequencies of the ambient RF caused by the toroid.

Great work guys, keep it up

[Mark]

Hi Kooler

You beat me to the punch! After seeing Pirates video with 2 toroids stacked I was going to try what you did. Excellent!

What I want to try with a dual toroid set up is to light some leds with one side and try to charge up 1 or multiple batteries with the other side. Not sure if one side can charge while the other side lights leds though. Can you give it a try?

The other day I was lighting up a 150 string of leds and hooked a FWBR into the end and was charging a cap. Now my meter may have been wigging out but I started adding winds to the primaries and the voltage in the cap started getting higher. I added on both A and B sides till I ran out of the wire I had on both. Voltage climbed every time the winds got higher. But when I tried to light a CFL it would no longer light up which indicates lower voltage. I'll have to replace the battery in my meter and recheck.

Anyways nice demo Kooler and let us know if you get a chance to try and charge a battery with one side and put out some light with the other.

Mark

[Mark]

Just a thought here but I wonder if it would be possible to incorporate the bipolar switch into the big toroid?

[unzapped]

I have a dumb question

How long does a brand new aa battery last on a typical joule thief circuit? with a couple leds?

Thanks
UZ

[Tectalabyss]

running time

How long does a brand new aa battery last on a typical joule thief circuit? with a couple leds?

Thanks
UZ

Hi .
Ive had them run from a couple of days to over a week depends on the toroid and the way its wound.at least from my experience. which isnt to great.aways more to learn : )
Thanks Tec

[Tectalabyss]

Something ?

Hi everyone.Here's something I am trying with two jule Thief's both with sec's.
both are 3 inch od dia.I cant find the one's used by Jeanna and lid motor I am trying to run the sec's back to each JT to see if this improve's the run time.will test these for the rest of the week.I tryed to wind a big sec last week what a mess a bird's nest looked way better al thumb's
Thank's Tec.

[Pirate88179]

How long does a brand new aa battery last on a typical joule thief circuit? with a couple leds?

Thanks
UZ

If you can get your amp draw down low enough, and, depending upon what leds you use you can get one to run for months on a new AA battery. Gadgetmall has several that have been running for months now.

Bill

[kooler]

dual toroid

mark,
about four months ago when i bought 4 of these.. i tried all kinds of ways
that i will probably try again.. now that i know how to wire these things for best output...
thank you jeanna for your deep research and knowledge that you pour into
the toroids
i did notice a load on one side still affects the other side
its when there wired together the draw goes way down

[jeanna]

Hi everybody,
I received the toroids the other day and confirmed that the one I had and lidmotor etc used from allelectronics is indeed the

OW48613TC from MMI
The distributor in the southwest is MTL in umm I think Arizona or CA.
They have a $30 minimum and the price will be around $2 ea plus shipping.
So, Gadgetmall who has a website for this kind of thing made an order.
They will probably cost him $3 so my guess is that he will want 5-6 for them plus shipping to you.
I have not even talked with him about this but it seems right compared to allelectronics price of $3.50.
So, if you only want a couple instead of 15 Check out gadgetmall's website.
He will be letting us know when they arrive.

Now, I can get back to playing...

jeanna

[jeanna]

How long does a brand new aa battery last on a typical joule thief circuit? with a couple leds?

Thanks
UZ

Hi uz
I made some normal led candle circuits about 5 years ago.
They had a 47r resistor and 1 yellow/orange led and 2 AAA 700mAH NiMH batteries.

Those batteries last 4 nights all day and night to 1 month all day and night.
The bright whites are the ones that run for a month or longer. I believe it is because they are so bright that when they are almost out, they are still bright.

My joule thief circuits are not normal because I remove the led from the transistor C-E and only use the secondary.

In my experience it is running the transistor that takes the battery power in this kind of joule thief.

The fresh battery 700mAH AAA again - only 1 of them, usually runs one to 20 lights for the same amount of time which is about 12 hours. [This means the energizer AA with 2500mAH will run for 36 hours.]
I personally believe it is because what is turning the lights on is the back spike from turning the switch on and off, and not mA from the battery like my plain circuits.

That is my experience.
Others use the joule thief in different ways and can speak from their experience.

jeanna

[Inquorate]

Hi uz
I made some normal led candle circuits about 5 years ago.
They had a 47r resistor and 1 yellow/orange led and 2 AAA 700mAH NiMH batteries.

Those batteries last 4 nights all day and night to 1 month all day and night.
The bright whites are the ones that run for a month or longer. I believe it is because they are so bright that when they are almost out, they are still bright.

My joule thief circuits are not normal because I remove the led from the transistor C-E and only use the secondary.

In my experience it is running the transistor that takes the battery power in this kind of joule thief.

The fresh battery 700mAH AAA again - only 1 of them, usually runs one to 20 lights for the same amount of time which is about 12 hours. [This means the energizer AA with 2500mAH will run for 36 hours.]
I personally believe it is because what is turning the lights on is the back spike from turning the switch on and off, and not mA from the battery like my plain circuits.

That is my experience.
Others use the joule thief in different ways and can speak from their experience.

jeanna

Let the trumpets blare, and confetti rain from the sky..

[CosmicFarmer]

Merry Christmas Energetic Forum



When I got done this looked too much like a Christmas wreath to not take a pic and share.

Put a whole green spool of radio shack wire on here. Might be around 400 winds or more, 3 layers scramble wind.

Happy Holidays

[slayer007]

In this video I just wanted to show the difference the magnets made on the JT transformer. Using the magnets on the transformer makes the light brighter.And makes it so you dont hear the transformer at all.

Here is the video.

YouTube - Magnets on the JT Transformer.mov