Joule Thief

[gadgetmall]

This is a bulb anyone can get, which is why I chose it. People are hard pressed to follow us, but they will not make their own if they have to put together all the leds... I am sure of that. So, I look for convenient things like this to make it easy to go somewhere from our research.

LOA .
19 leds come in cool brighter white and also in this warm color, which I like a lot even if it isn't as bright.
It isn't called 19 leds or strawhat. I just knew that from here.
I took a pic of the 2 labels so you can find this.


jeanna

HMMM. I have never seen them . where did you find them ? I am a light bulb freak . and shop at big lots , kmart ,walmart ,wallgreens , dollar stores . I think they don;t have them here . all i found were some little cheesy 20 led bubble  . looks like 20 ma leds in them and don't put out and real light  maybe a little less than an 8 watt night light bulb .

[jeanna]

HMMM. I have never seen them . where did you find them ? I am a light bulb freak . and shop at big lots , kmart ,walmart ,wallgreens , dollar stores . I think they don;t have them here . all i found were some littl echeasy 20 led buble  . looks like 20 ma leds in them and don't put out and real light  maybe a little less than an 8 watt night light bulb .

I got these at the end of the lighting aisle of wall mart.
You might remember last year I was complaining that no one in my town sold leds. I found them this fall.

These were out on the market very shortly in 1998 and called back immediately. They were $60 each and did not (still do not) last very long.
(My neighbor was pumping a pneumatic starting motor and my lights were going up and down. The rest were OK but the led bulb was gone.)
I took it apart and actually only half was gone, but I predict the company won't want to keep these around for too long. Even so, they are also at Sam's club, I hear.

They had a DC version in 1998, but I did not find that yet.
That should be good without any modification, maybe.

When I get the battery / switch thing figured out (Not Martha Stuart , but better than this) I will make another video.

Last night I tested brightness of this with a single lithiumAAA; and a pair of NiMHAAA.They were about equal to the eyes.  Since I would rather use a rechargeable even if I break my own rule about 1 battery, I tested it tonight with the AAA pair.
This has taken down a couple of AAA batteries in 3 hours, which is pretty fast, so for use, a pair of D's will be best.
I also cranked it all the way up for this test.
I am assuming these big transistors eat the batteries faster than the little ones do. Or so it seems to me.

btw,
I am very happy with the dome light. I screwed the fixture to the wooden plaque and it stays in place when I pull the switch.
It is the cone of light going down that pleases me with this one.

Even a dim light helps you to see what is in a room when the cone of light goes down and up.

jeanna

[Pirate88179]

Jeanna:

Well done!  That is a nice light you have there.  Tell me what you need exactly to accomplish you battery hook up and I might be able to help.  In my Jeanna Light replication, I am employing an idea I had for just this, if I read you correctly.  If it works OK, maybe it will help you?

Bill

[gadgetmall]

Hi everybody,

Still no toroids today.

I took a few pix of my new 19 led bulb which is a self contained bulb with joule thief and battery run through the power plug. The power plug is taped to the stem of the lamp and sort of hard to see, but maybe you can magnify it enough to see.
It is obviously not finished. I looked some more today to find a switching unit or a way to connect the battery so it can easily be moved from the 110v wall plug to this JTC enclosed bulb when the lights go out.

It is adequate light although not super bright bright but here are 2 pix. Notice the 2 cones of light above and below the shade.

jeanna

Jeanna can you Pm me with the distributor  with the 30 dollar minium . i want to buy 15 of those  big toroids  Please . I missed that post some where but gary said you can get them for 2 bucks each  ? Also your going to need a heavy duty DPDt toggle switch to change from 110 to battery . Be sure to keep the circuits separate with that switch and tin stranded wires when wrapping them around screw terminals on those big toggle switches . If you need a drawing i can draw it out for you but you know me ,Jesus will probable correct it And i welcome that.
Also the jeanna toroid i made with the red wire will light up an unmodified CFl intermittently ,meaning it blinks or strobes full bright . I believe with an mk-2 type winding and combine those outputs it will be possible to light Cfl bulbs without damage to them so they can also be switched from mains to battery operation .
Albert

[nievesoliveras]

@all

I made a mistake on the names of the person who recommended the circuit simulator on this post:
http://www.overunity.com/index.php?topic=6123.msg213051#msg213051

The correct person who posted the information was @abbarue.

Jesus