Joule Thief

[xee2]

@ Pirate88179

Wow. That is impressive. You might want to record the voltage and current out of the Fuji board when driving the 400 LEDs. On my little F4T5 tube with AAA battery I am getting about 150 VAC and about 1.6 ma AC. These would only be accurate if the output was a pure sine wave (which it is not) but they give some ideal of the output power. If they are assume to be correct, then I am getting about 0.24 watts out with about 0.54 watts in which is about 44% efficiency. That is a really good efficiency for a cheap voltage multiplier.

[jeanna]

Hi everyone,

I am writing from beautiful blue bottle cafe on my sweet xo computer. This has been an amazing week for broken things.

last might I was unable to shut my computer off amd today it is on its way to be fixed.

I sure am glad I got this xo to play with. I sure didn't think I'd be using it for real. Good thing I remember my password.

Anyway, I will bbs,well, ( on n off) until my real computer returns home.

The keys on this xo are made for 5 yearold's hands.

Have fun.

jeanna

[Pirate88179]

@ xee2:

Thank you.  I will try to measure the best I can and see what it says.  I agree it won't be totally accurate but at least it might be good for comparison purposes.

@ Jeanna:

Sorry to hear about your computer.  They are great tools but when they don't work, they can be a pain.  I can usually fix my own problems but, I also have folks that know a lot more than me and I use them when needed to keep running.

@ All:

I have received some negative feedback from some friends that I sent some pics to.  They say that I am just plugging the LED lights into the wall and taking pictures.  (yeah, some friends right?)  So, I took these all from the same position using a tripod and hopefully, you can see the Fuji AA circuit hanging in the tree near the upper left on a close-up. (The yellow battery)  Then, you can see the wires that I used to make the parallel connections to the board.  I used the flash in some and the others I did not.  This should answer any questions about being plugged in.  It speaks well of the OU community that none of these questions came from here.

Bill

[Pirate88179]

Here is another.  Again, all taken from the same tripod location.  Does anyone think I should go for 500?

I think this circuit is more efficient as the load increases.  I will try to test power usage and see how many watts are going in, and coming out.  Have an early case in the a.m.  Happy New Year everyone!!!!!

Bill

[timmy1729]

Here is another.  Again, all taken from the same tripod location.  Does anyone think I should go for 500?

I think this circuit is more efficient as the load increases.  I will try to test power usage and see how many watts are going in, and coming out.  Have an early case in the a.m.  Happy New Year everyone!!!!!

Bill

Go for it!

@All
I'm not able to get a string of LED's or a tube light right now. What can I test out my camera circuit on and not fry?