Joule Thief

[WilbyInebriated]

Not me. But it looks interesting. What is it? I am looking at ambient energy receivers now (without any good results). Perhaps you could start a thread and post your results.

it's a cellphone booster antenna.
here is an example: http://www.youtube.com/watch?v=255vpnyBwH4

[TheSchuss]

Thanks for the Information !

I have some  0.5v @ 3.5 Amps solar panels,  I want to connect them to make about  4.5 - 6v but at only an output of  1 Amp...

Can you actually bring down the Amps of the solar cell without dropping the volts to much,
what can I do ??

freepow,
You can reduce amps without dropping the voltage, use the proper size resistor.

At .5v per cell, hook them in series to achieve the desired output, 9 cells for 4.5v, 12 cells for 6v, in either case you'll maintain 3.5 amps.

[TheSchuss]

Yes. But it seems that some people are too lazy to look back through the old posts. So this may be new to them.

Hi xee2,
Yep, some of us are very new; to this forum that is, like myself.  I joined on Saturday 8/6, started reading the comments on page 1 of this thread; dated 11/20/2008 over the weekend and managed to make it up to page 25, dated 11/23/2008, about 625 post in all, back when you all were still messing with the Fuji Camera circuit.

BTW, did anyone ever figure out how to make that circuit work?  Mine ran at 306 volts, 8 mA, it did light a 15W fluoro tube at about 1/5th brightness.  Using Ohm's law, I figure if the amperage could be increased to about 50mA at 305 volts the fluoro tube would light just fine.  Any suggestions?  Do you know what Ohm's law is, or even how to apply it?

Excuse me for saying so but in your posts in pages 1-25 you came across more like a blind man with a dim light than someone with a bright idea and no one Criticized you!  I'm not sayin', I'm just sayin'.

Over the weekend though, I managed to replicate a couple of projects posted by members, do some experimenting on my own, take care of domestic chores and take care of some necessary shopping.

Tonight I started at page 1016 of this thread, dated 8/3/11 and am working backward through the posts.

I've built JTs with very small toroids that ran up to 10 - 3.5v, 25mA 50,000 mcd white LEDs at full brightness on depleted single cell 1.5v batteries(tested at .8 volts), built single cell 2 LED-2 transistor flashers, replicated FM mini transmitters, etched my own circuit boards, and built HHO generators, years before I found this forum.

I find you, and your buddy he'sinebriated(again) comment's especially Offensive because you're both supposed to be 5 Star "He-row" members.  In that capacity I would think you would be willing to help and give direction not just throw out snide remarks about newbie posts or questions.

Fact of the matter is, you couldn't read over 25,000 posts on this board in a month to get caught up anymore than anyone else could so such criticism should be beneath you.

Please feel free to forward this to he'sanebriated(again), cause honestly, I just don't feel like sending it twice.

[TheSchuss]

Darlington means 2 transistors really....right?

Bill

Yes, it's two NPN transistors set up with the emitter of one transistor connected to the base of the next transistor.

This link will give you a decent picture of the Darlington: http://www.talkingelectronics.com/projects/TheTransistorAmplifier/TheTransistorAmplifier.html#THEDARLINGTON

The center image of fig. 71 is the Darlington, the left image in fig. 71 is two independent transistors in a Darlington configuration.

[TheSchuss]

A string of voltage dividers?  Resistors, or maybe diodes?  They're simple.

--Lee

Voltage dividers or diodes would do the trick, Resistors only effect amps, not voltage.

Just out of curiosity, why would you want to do that?