Big Joule Theif

[jeanna]

Replay

tiny orange toroid light

This time I checked to make sure, and it is what I wanted to present.

The reason for this video is because I can see that the toroid is the most limiting factor for making a joule thief. I only realized this when the stock rooms of allelectronics and mouser emptied of the toroids we mentioned in a day.

So, I took the circuit from the 10w cfl that I had removed, and the screw base too.
I could have used the transistor and resistor from the circuit too, but I didn't think about that until later. It was the toroid I was concerned about.

---
yes a solar panel does this, but in the day this light is not needed, so a storage battery of some kind is necessary.
There are videos out there using batteries of aluminum foil and copper, or carbon. I lit a led with 2 of these in series. I didn't try the jtc with that but it would surely work with only 1 instead of 2 in series to some degree.
So, the focus is really on making a bright light with that toroid from the cfl.

And, please keep pushing this envelope, everybody! And, please show others what you have made.

jeanna

edit
let me add the LoA I get from wall mart. I am sure they are in other places. (My hardware store carries some but not all of LoA bulbs.)
They are made to resemble a standard light bulb and have 20 leds in series and a whole lot of protective caps and diodes and resistors and even a fuse, so while I have made and shown(on youtube) how I made a modified LoA bulb into a battery joule thief lamp, I wanted a simpler design.
this eventually turned into the jtpu = joule thief power unit, which is a stand alone joule thief in a switched plug socket which lights one or 2 unmodified LoA bulbs and is entirely portable.

[Tectalabyss]

Light's for the world

I am hoping people around the world might be able to use the old used cfl bulbs to make some light for the village.

Here is my contribution toward that end.


I took it off. Something went wrong with the last pic.
I will fix it in the morning.

jeanna

Hi Jeanna & All.
That's a good ideal is there any way to use a low cost solar panel with your setup ?It would work very well in some of the sunnier countries around the world.where they cant easily find or afford the batteries.Just a few humble thought's Tec
PS I Am looking forward to seeing the picture's when you get the chance. Thank's.Tec

[ewizard]

Lights of America

The limitation here is that if you are not in the states, you might not be able to get this.
Their website didn't have anything to say about these lights a few weeks ago.

But if you can get them, they are great now that you can make a power supply that works with them unmodified.

have fun.
If you are really new I suggest that you make a plain joule thief to get your hands into it. Makezine has a great how to video. It is how I learned.
Then start making the secondaries and carry on from there.

jeanna

Thanks for the info and sorry for the duplicate post last page - that's odd as I'd swear I only edited the post to reduce that long LOA list but it became another post

I see the LOA web site and I'm in the states but I'm not sure which of the many lights they have that you used in your setup. Is there something special about their light? I see they have CFL ,LED lights and much more. I assume this was one of their CPF lights?

[Tectalabyss]

JT Wanna be

Welcome area46241.
I hope you have an enjoyable learning experience.There are alot of nice people here Tec

[jeanna]

world light

I am hoping people around the world might be able to use the old used cfl bulbs to make some light for the village.

Here is my contribution toward that end.


I took it off. Something went wrong with the last pic.
I will fix it in the morning.

jeanna

[area46241]

joule thief wanna be...

Hello this is my second post here I am new. Thank you all for the awesome videos on youtube. I just want to say that I purchased my first lights of america bulb at the local grociery store here in Indy for two dollars on sale in the hardware section its the 20 watt that replaces the 75 watt and I cant wait for it to blow out so I can disect it for the toriod and the gas tube. My next stop is the dumpster behind the drug store for some camera boards. I really am interested in winding the different coils and don't have the specs on how to. Lidmotor inspired me and then I found Dr Stifflers website. My appologies for such a long winded post. The Donald Smith video and Dr Stifflers both appear to be Tesla variants. Don Smith hails from Spring Texas and i can't help but wonder if Dr Stiffler and he are/were acquainted because Stiffler is from Humble, Texas a few miles away. Smiths accent caught my attention because its east Texas and I went to jr high and highschool in the Woodlands. Anyway thanks to lidmotor, jeanna, johnydavro, chilliqueen, and of course Dr Stiffler(I want your board but its going to have to wait) If any of you have any suggestions on windings I would sure apprieciate it. my crates of electronics supplies are wide open in the kitchen now and the books are opened I'm excited about the possibilities...Static capacitive absorption...is it over unity? or is it something unseen?

[Tectalabyss]

LoA

It could mean.
Light's Of America Which I think Sell's that type of bulb?
Tec
Well Jeanna answered the question.and what do you know I was right for once : )

[jeanna]

LoA

Lights of America

The limitation here is that if you are not in the states, you might not be able to get this.
Their website didn't have anything to say about these lights a few weeks ago.

But if you can get them, they are great now that you can make a power supply that works with them unmodified.

have fun.
If you are really new I suggest that you make a plain joule thief to get your hands into it. Makezine has a great how to video. It is how I learned.
Then start making the secondaries and carry on from there.

jeanna

[ewizard]

Very nice setup jeanna - I like they way you have used a standard socket and switch. As I'm new here (but not new to alt. energy or LED's) I have to ask what an LOA is as I'm not familiar with that (acronym?). And you can't say I didn't try to find the meaning :
LOA Law of Attraction
LOA Length Overall (boat specification)
LOA Leave Of Absence
LOA Letter Of Authorization
LOA Library of America
LOA Life Of Agony
LOA Letter of Agency
LOA Letter of Approval
LOA letter of offer and acceptance (US DoD)
LoA Legends of Aranna (game)
LOA Lords of Acid (band)
LOA Length Over All
LOA League of Awesomeness
LOA Loss of Appetite
LOA Letter of Authority
LOA Love One Another
....... this was much longer but I decided to shorten it to not waste bandwidth but nothing found relating a light.

[ewizard]

oops - duplicate post

[Tectalabyss]

Hi Jenna.
Great job on the JT power supply Looking forword to the length time you get on the run time. Tec

[jeanna]

power draw

Hi folks, Hi jeanna, nice work. What is the normal power draw of that LOA multi led bulb again. it really seems to spread some light.
peace love light
Tyson

The package says 1.5 watts
112 lumens.
They claim 40 watt filament bulb equivalent. I agree as long as you use a silk shade. Otherwise I say 25w.

It should be about 100mA draw for the 20 LEDs bulb, because it needs the TIP31c or 3055 to light this bright..

The TIP31C in a jtc runs down the battery a lot faster than the 2N2222. But the 2N2222, cannot get the spikes high enough for this bright a light.

I will do a battery drain test over the weekend.
Especially since I am using 2 AAA on this.
I am very curious to learn what the time factor is.

I Have decided that is a more accurate estimate than an amps draw test using a resistor and ohms law. That is a lie here.
Without an amps meter, this is all I can do. It is the actual practical amount of useful time too, so it is not a bad thing to know.

thank you,

jeanna

[SkyWatcher]

Hi folks, Hi jeanna, nice work. What is the normal power draw of that LOA multi led bulb again. it really seems to spread some light.
peace love light
Tyson

[jeanna]

joule thief power unit

Hi folks,
I posted these pix at ou last night but I am aware not everyone here looks in there.
And, besides this has such a snappy name.
This is my new Joule Thief Power Unit!

The pictures are
The JTPU, which is a joule thief with a 3/4 inch toroid with secondary where I connected the secondary to the wire points of the plug unit. I split the red battery wire so it encloses this wall type switch.
One unmodified LoA lamp being lit by plugging conveniently into this JTPU,
The same unmodified LoA lamp being plugged into the wall outlet from the power company.

The light is ever so little dimmer. You cannot really notice it. If you look at the underside of the bulge in the green lamp you can see the wall powered one is a little brighter.

I can put a second lamp into this JTPU as well.
It dims the lights a little but the total light is more with the 2 than with just the one, so, it does not steal it all. And, I believe this is capturing what is being lost to dissipation with only one lamp.

I am using 2.4v to power this to this level of brightness. (maybe even 2.33v)
It is too late tonight, but I should do a run down time on this jtpu with this lamp. It seems great, but you never know til you try it.

jeanna

[Tectalabyss]

Car ignition coil's

I am not an expert on car ignition coils. But, I would guess that if the primary resistance is less than 1 ohm then there is no internal resistor.

I've used both the older tower type and the newer Flat-pack type.both worked well.has far has the resistor most of the older one's dont have them that I know of.you will alway's get some resistance due to the winding's.No resistance = bad coil, at least in automtive coil's. Tec