Joule Thief

[xee2]

@ sm0ky2

Pirate88179 lit several hundred LEDs with his EB. I think he made a video of it. You will need to do some searching since I do not have any links.

[jeanna]

It was almost a week ago that I went to Home Depot and bought 2 globe style pull switch lamps and a 4 watt fluoro tube.

I lit the tube tonight.
I think I will start fresh tomorrow and make sure I time it properly with a fresh battery.
The light is significantly less than the 8 watt fluoro and even more less  than the 18 inch 15watt.
Then, I took a look at the globe with a spotlight 3-led inside it.
The 3 leds in the globe seem almost as bright as the 4 watt.
I think it makes sense to make some good bright light substitutes for the hall.
I took a couple of pics of the 2 together and alone. The light shed all around the lamp seems to extend farther with the leds in the globe to me.

I like leds.
It is so interesting that we do not see the blue but the camera does.
Notice how much of the cloth under the globe is reflecting the light. I think that is the best way to calculate how bright it is compared to the other.

jeanna

[sm0ky2]

@ sm0ky2

Pirate88179 lit several hundred LEDs with his EB. I think he made a video of it. You will need to do some searching since I do not have any links.

yeah, his EB and LED's are a different than mine.

my EB is an 'old fashion' type, very small, very close together built soley for the purpose of assisting in data collection and testing.

my LEDs are 'hefty' and draw entirely too much current for that type of EB.
even with the joule thief.

my EB only gets 1/10th of the necessary output current to light the type of LEDs im using. ( 3ma vs 30ma needed)

i built the joule thief cause pirate said it might help boost the EB
which im sure it does, just not enough for these big red LEDs

even my JT had to be modified from the normal specs to make it work with them.
i CAN however light 10 (possibly more) with a single AA cell and my joule thiefs.

[jeanna]

Well Pirate lit hundreds of leds with a fuji camera joule thief. Yes it counts, but it is way more powerful than the one you just made.

Also, the leds that are super-brights have an amount of phosphors in them to make the blue led into a white one. the phosphors are reacting to the high frequency like a fluorescent bulb.

But your red one is a diode, and it is restricting the energy as all diodes do. These super brights are a different kind of light from the diode light.
I think Radio Shack has super brights too. It would be a good idea to find them, because that is the next step...
Winding a secondary and using that to light the superbrights.

I have not been trying to get my EB to light leds. I should, but I keep not thinking of it in the daylight. So, I am sort of in the same spot of not having an EB  light any leds.

Did your voltage go over 1 volt yet?

jeanna

[sm0ky2]

Did your voltage go over 1 volt yet?

jeanna

nope, its been holding steady at (0.66v - 0.68v) for the past 2 days. current is rising as time goes by, but not as fast as my impatience would like to have it ... im about to dig up 1 of the electrodes and move it further away.  this will of course take me off the magnetic lines a bit,  67-degrees inclination, i need pipe that goes halfway to china on the north end to go across the yard....

to get more voltage i may need more surface area, which means more electrodes, or bigger ones.