Joule Thief

[jeanna]

Hi everybody

I have some joule thief information.

I liked the widow so the other day I made one with a primary  just like it and put it into the curiously hot box. (5T,8T,8Tsecondary)

Today I wondered if the newbie wire made any difference to the performance. Since I want another exact widow configuration, I made one and tested it all along the way.

The jtc is the same regular jtc with pickup.
2N3904
different resistors. see below.
The way I put the wires in the jtc is denoted like this:
B5T, means The wire with 5 turns is connected to the base resistor and C8T means the wire with 8 turns is connected to the Collector.

The widow is 5T,8T,40T
made from tele wire with the thick plastic coating and the gauge is 24 awg.

There is another difference which is the way I wound the 40T secondary pickup wires.
When I wound the widow, I wound it pretty irregularly and it seems I started and turned at half way and ended at the beginning area, but it is not regular, and  the secondary wires are about 3 deep. I used 30 awg
I wound the newbie all around then kept going past the beginning til done; with each wire carefully placed in between the previous row. I used 26 awg.

jeanna

[jeanna]

everything work fine for me.
except the spell checker and post preview.

try deleting your temporary files.

I can do the full quote, but if I copy some text and use the quote button it does not put the code in place so I can paste.
And I cannot use the smily buttons or url buttons.
Maybe I need to recheck my profile, I noticed something about php the other day when I made my pages loong.

I may make them 50 posts now instead of 25. One load and I can read the day.

jeanna

[Pirate88179]

@ All:

OK, I had to do another video with more 10mm ultra bright LEDs and here it is:

http://www.youtube.com/watch?v=nEr6-4TeCTA

That is 7 of these bright leds.  I bought some more today so I have the specs.......28,500 MCD, 10mm, 3.5-4.5 forward volts, 30 mA's.  This is for each and now there is 7 from the earth battery and basic joule thief circuit.  I did add another 2.3 volt 10 farad supercap but, I don't know if this helped or not.  I just added it to the circuit because I had it sitting around.

Bill

[xee2]

@ jeanna

In the 2nd to top line of your data chart (widow-tele wire) there are two sets of data for the tor23 B5T C8T  40T toroid. One gives frequency as 125 kHz and other as 222 kHz. Both have same base resistor and voltage. What is the difference that produces the different frequency?

[electricme]

@all

Disturbing news.
I just read about the proposed Icann Internet control being taken away from America to a proposed G12 which is made up of 2 members of each country as suggested by this article.

October this year is the deadline, Bush wouldn't do it, will Obama do it to appease europe?

http://www.prophecynewswatch.com/May06/0671.html

I think if this goes ahead, then the internet freedom will be curtailed by the interests of the government where you reside.

Australia Gov has a "secret hit list" which has not been published, nor do they wish to let anyone know which web site is on this NAZI list.


jim