Joule Thief

[electricme]

@Hasens1,

I want to try and make your JT circuit oscillate at 50hz.
If the 2nd Cap .1uf in the tank circuit was increased to a higher value, what shoul it be?

jim

MT went off again, score up to 19

[TheNOP]

I want to try and make your JT circuit oscillate at 50hz.
If the 2nd Cap .1uf in the tank circuit was increased to a higher value, what shoul it be?

f = 1 / 2pi * R * C

2pi is  6.2832

it is faster with calculators 
~16.7 mS is 1/60 of a second, 20 mS is 1/50 of a second.

http://www.tpub.com/neets/book2/3d.htm
http://www.cvs1.uklinux.net/cgi-bin/calculators/time_const.cgi
http://www.lautsprechershop.de/tools/t_schwingkreis_en.htm

[hazens1]

@Hasens1,

I want to try and make your JT circuit oscillate at 50hz.
If the 2nd Cap .1uf in the tank circuit was increased to a higher value, what shoul it be?

jim

MT went off again, score up to 19

With a 10k ohm resistor and a 10uf 35v cap I was able to get 50hz from the pickup coil after the rectifier. When I place an LED on the pickup coil after the rectifier the LED flashes brightly about 10 or more times per second. Looks kind of like a strobe light. Epileptic experimenters beware

Edit: If I lower the resistance to 9.9k ohm the flashing appears to be steady and the unloaded pickup coil freq is 160hz after the rectifier.

[altrez]

@all

Would anyone happen to have a link to the PDF that was posted here. It was about the navy and magnetic amplification I can not seem to find it.

Thank you!

[Bob Smith]

I've been following this thread from the sidelines from the beginning (trying to keep my head above water with work - little time for much else).  I'd like to throw out an idea for an open source healing apparatus using the JT:

Healing With LED and Laser light
I've been reading about how different frequencies of light penetrate much deeper into tissue than ordinary light, to help bring about faster healing.  I wonder if the JT could be used to efficiently power light wands for this purpose.  Members are already powering 30-plus LEDs.  Why not develop a configuration like the one in this link:
http://laserscenarfusion.com/q1000.php
Here's their main site:
http://laserscenarfusion.com/

I don't know anything about low intensity laser LEDs, as mentioned in the link, but maybe the JT would power them as well.

I have had some significant relief from computer mouse overuse tendinitis from this sort of technology. A know of parasite cures using similar light wand technology.
Why not try and build it ourselves?
Maybe this is best for another forum thread. Just say the word, and I'll start it.
Any thoughts, anyone?
Bob