@ Jeanna:

I just measured the volts on my circuit which has been sitting in the house since this weekend's experiments posted earlier. (led + lead not connected)  From the - side of the cap, which is also the - lead of the led to the pluse lead of the led I got 1.62vdc.  I checked mA just for the heck of it and got 6.12mA but it began to fall off as I guess the meter is basically shorting it.  It falls off when I check a battery for mA.  I am not sure I understand your other question.  Tell me what you want to know, and I will check it.  Thanks for the great info on Joule thiefs.  Just when I think I am learning something, along comes so much more that I need to learn.  But, learning is fun!  Thanks again.

@ Hans:

This motional E field theory is fantastic.  This is the first time I read of a bifilar coil arrangement where they actually tell you what to do with all of the ends of the wires from the windings.  I have several coils lying around here but have no idea what to do with them.  More to study now.  Thanks for finding this great information.


Bill

@ Bill,

There are a number of ways to connect bi-filar coils, each with different properties. More in further posts.

Hans

Quote from: Pirate88179 on January 03, 2008, 05:17:00 PM
@ Jeanna:

I just measured the volts on my circuit which has been sitting in the house since this weekend's experiments posted earlier. (led + lead not connected)  From the - side of the cap, which is also the - lead of the led to the pluse lead of the led I got 1.62vdc.  I checked mA just for the heck of it and got 6.12mA but it began to fall off as I guess the meter is basically shorting it.  It falls off when I check a battery for mA.  I am not sure I understand your other question.  Tell me what you want to know, and I will check it.  Thanks for the great info on Joule thiefs.  Just when I think I am learning something, along comes so much more that I need to learn.  But, learning is fun!  Thanks again.
Bill

Well it may not be an issue with the single set that you have. I think what I am seeing is something that is an interaction between the 2 sets.

If I check the voltage across either set ( cap end to cap end of either the green set or the red set) I get a voltage and they are both exactly the same. However if I check the voltage across  "outside of those caps in just the wire that hooks them together, there is nothing. So, I am interpreting this to mean that since there is no load to draw current there is no more movement of any kind. I plan to add a LED just by itself across the plain wire to check this, but I first need to go to radio shack. And I would like verification from your single cap type of circuit set.

Just the wire alone. The part that doesn't do anything but touch the LED/cap circuit.

I will make a drawing, I think.

jeanna

Jenna

A good article on LED's and Joule thief circuts.

http://www.talkingelectronics.com/projects/LEDTorchCircuits/LEDTorchCircuits-P1.html

Den

Quote from: cub3 on January 03, 2008, 06:57:52 PM
Jenna

A good article on LED's and Joule thief circuts.

http://www.talkingelectronics.com/projects/LEDTorchCircuits/LEDTorchCircuits-P1.html

Den

Thanks, Den

I just bought the list for another joule thief. And since it is now pouring rain again, I may just build it.

jeanna