19 LEDS Joule Thief Lamp Modified Jeanna's Light

[MrKinslow123]

Can anybody point me to a resource where I can buy a decent sized ferrite core toroid? I have been on-line and the largest one I have been able to find is a 1.4" ID and 2.4"OD. I would like one with about 3.5' ID

[zackthegoth]

so you mean I didn't have to smash the glass part all over my bed, that's what I did when mine died. they come apart that easy.

[jeannacav]

@zackthegoth

The globe is plastic, not glass.

[zackthegoth]

@jeannacav

that one's a lights of america led light is it?

[jmjpowerjoule]

As far as 'toroids' are concerned; I have found that some don't work as intended with the simple joule thief circuit. I wrap all of mine exactly alike. So they should all work.

Also, while at Radio Shack I noticed that their toroids have two different labels:

1.) Input

2.) Output

How can you tell them apart just by looking at them?

Which ones work with the joule thief circuit?

Thanks

[jmjpowerjoule]

Jeanna aka "jeannacav,"

I dismantled three burned-out coil bulbs and found some very cool looking little round circuit cards in them.

I'd like to make something for my wife with these and I don't know exactly what.

Any suggestions?

Q: I'd like to make some battery powered LED bulbs with the gutted-out bases. Should I de-solder the parts of those circuit cards for this or use them intact?

Sincerely,

jmjpowerjoule

[jeannacav]

@jmjpowerjoule

If you follow the instructions/suggestion on this video you will have a sweet portable light.

It is very low brightness, however.

I use mine all the time in the corner of the bookshelf for pretty ambient light.

To read by a light I suggest making a more powerful circuit (if you can find a good toroid) like the one in my video "is this a hairpin...?"

I did all this by trying lots of ideas.

So, that is my advice.

Make a good joule thief N see what it will power, then make a lamp.

[acmefixer1]

@jeannacav

You're very innovative. But the LED light requires 2 or 3 watts to be as bright as on the AC line. And a single AA cell is just too low power to do that. It needs more batteries. I think I'd start with 8 AA cells and use one of the circuits that Xee2 (xee2vids) has here on YT for a LED light running on the AC line. One of them runs off 12V and uses about 100 milliiamps.

[paintballphysco249]

Can u make a tut on how to make the joule theif part thanks

[acmefixer1]

@paintballphysco249

On instructables there's one called make a Joule Thief that gives step by step instructions. You can search for others that similarly break it down to easy steps. One important thing. Treat the leads gently and don't bend the too much or they'll break off easily.

[renekenshin6573]

I was imagining a porch light with rechargeable single AA battery which charges during the day via a mini solar charger and will automatically turn on at night using a light sensor circuit, that would be nice ^^

[jeannacav]

@renekenshin6573

Yes, that is a great application for this!



[acmefixer1]

@renekenshin6573 Good idea. But you can go to the home improvement store and buy a solar garden light for $3 or $4 and it will do exactly the same thing. You just have to make sure there's enough light on the solar cell to keep it running.

[kevininbc]

Nice work Jenna! It's always great to see research in application. Do you have any estimate on what brightness this unit is equal to standard incandescent ? Keep up the good work :)

[jeannacav]

@kevininbc

These lights are as bright as they are if plugged into a wall socket.

The problem is the bulb is not as bright as a standard light. Partly that is the upgoing direction of all the leds. Someday there will be some smart and affordable led bulbs.

I am using the UNmodified bulb off the secondary and it is the brightest of all the lights I have made. The one called the "world light" from the tiny orange toroid is the one that lasts the longest while making a decent amount of light.

[acmefixer1]

@jeannacav

The Lights of america lights were so bad the FTC (dot gov) took them to court over their short life and low output. But I bought some recently and I'm hoping they won't die as quickly as the earlier ones.

[johnnyaum3]

Of course, a video is in progress. Contact me at johnnyaum yahu - email or mess, even offline, and i will give you the schematic, maybe you will give it a try and post a video too. Tnks.

[johnnyaum3]

Hi Jeanna! Thank you for your nice work, i watched it close! You said somewhere that no one has a selfrunner! I HAVE A SELFRUNNER - A FREE ENERGY DEVICE THAT PRODUCES SAME LIGHT ON LEDS AND RECHARGES BATTERIES INCLUDING!! THE LOAD BATTERY!!! Keep up the good research to achieve overunity!

[jeannacav]

wanna share it?

The world will be a place filled with generosity if you do!

[area46241]

I like it!

[jeannacav]

thanks area46241

[teslacult]

I would recomend that you use MOSFETs connected in a darlington pair as your switch. This will give you much sharper spikes and possibly make your driving transistor run cooler because you wont be dropping volage in the transistor while its inbetween full on and full off.

[jeannacav]

I NEVER have any heat problems. And, the spikes are very steep. I also have a personal limit of one battery and one transistor. I want it to stay really simple.

Thanks for the comment.

[teslacult]

Just so you know radioshack sells a darlington pair assembled into a single transistor, might be worth a try. I saw on another video you asked if it would be possible to create heat without using large currents. The answer would be yes. Heat is nothing more than a specific frequency of electromagnetic radiation, just like light. Most modern physicists would say light is photons, but they are wrong. It's all vibrations in the eather. How long does you battery last powering your lights?

[jeannacav]

The AA battery runs anything with one of these big transistors for 5 1/4 hours. Fluoro tube or a couple of leds. It seems to be just the jtc -no secondary- that uses the battery, which makes sense to me.

The 2N3904 takes 24 hours or longer to run down a AA.

I am using NiMH rechargeables which start lower and stop driving a light at higher voltages.

The base resistor makes a HUGE difference as does a rheostat on the battery.

So, how do I make heat from the backspikes?

[teslacult]

As far as producing heat goes, heat is a specific frequency of electromagnetic ratiation. Tesla experimented with frequencies that were extreme even by todays standards and not easily reproducable. To produce heat would require oscillations of an extreme small period and probably can not be reproduced with even specialized high frequency transistors. Also an air cored transformer must be used because a ferrous core would slow the oscillations down too much. Keep up the good work.

[teslacult]

I almost forgot, an infra-red heater has been designed and is on the market. It uses infra-red lasers to generate heat and is much more efficient and pleasant than standard current based heating devices. I'm sure you can find them on the internet.

[morpher44]

These should be mass produced for emergency lighting. Great for 7.0 earthquakes!!! Good job.

[overunitydotcom]

Hi Jeanna, better put ALL LEDs in Series,

not in parallel. This way you on´t have any problems with different characteristics of the single LEDs and you can use high voltage spikes ! Try to do a feedback from the last cathode of the LED chain back to the positive pole of the battery ! This will help to recharge the battery ! Good Luck ! Regards, Stefan.

[jeannacav]

I am making another one and 112v spiky volts turns this on as a lightbulb. It just needs more than 230v for full brightness.

[jeannacav]

These bulbs claim to be as bright as a 40w bulb, but I would say more like a 25w. And with anything over 175v they are very bright.

The leds are all in series.

It is a bit of a job to make 19 series leds very bright, but modifying this bulb is so easy, that it makes up for the extra spiky volts needed.

Thank you...jeanna

[overunitydotcom]

Very nice light Jeanna ! Well done !

How bright is it really, as some cameras overexpose these lights ?

Are all the LEDs put in series or in parallel ?

How much voltage do you have across the LED chain ?

[Lidmotor]

I have been all over town asking for a "Jeanna's Light" and nobody stocks them!! -----yet.  Good job Jeanna. Your projects are getting better and better. Imagine this: You go on a trip and forget to turn off "that" lamp. You come home after a week and the light is still on ---still running on ONE AA BATTERY!!!!

[jeannacav]

HA

I wish this were true.

I think the larger transistor takes down a battery so fast. It is not the load from the secondary as anyone who has made this knows, but the TIP31 or TIP3055 seems to draw 150mA.

2 days. I have it on a AAA, so I won't be answering this yet.

[marthale7]

you will freak your friends out if when they come over you say some thing like... I need to check for my car keys outside, you reach over pick up the lamp and walk outside looking for them :-)

great work. Nice brightness for that small a package. Thanks for sharing.

[jeannacav]

Yaknow Mart, it is bright enough for this!!

I think we have a gauge now.key-finding bright.

Thanks Mart

And

Thanks Slayer

[GBluer]

Great Video Jeanna.

Nice setup and very bright.

[Pirate88179]

Jeanna:

What a great video! You always explain everything so well. Where do you get those led bulbs? I have not seen those around here anywhere.

Great work Jeanna!

Bill

[jeannacav]

Thanks Bill, (and gatekeeper)

I got them in wallmart, and I have heard that sam's club is a source for 3 packs. They should be in the lighting department of some hardware stores.

You could ask for them wherever LightsOfAmerica cfl's are sold. It might help.

[Pirate88179]

I asked Walmart for a Jeanna Light and they looked at me like I was an escaped mental patient.

One day, this will change.

Bill

[gatekeeper1006]

Good job

Thanks for sharing :)