Joule Thief

[innovation_station]

so who is READY!?!?!?!

FOR WHAT YOU ASK NOW LOL 

BUT ...............THE IST JT HHO WATER CAP DUH!!!


DID SOME ONE SAY FLUX CAP     

LOL


IST!

well i gotta do something with this nice voltage supply ... and all those cam caps ... ....


http://www.youtube.com/watch?v=GgYPHNUqI6A

NOW COME ON I GOTTA TO BE ABLE TO DO SOMETHING WITH THIS UNIT LOL 

[Mk1]

http://www.disclose.tv/action/viewvideo/18810/Leedskalnin_generator_config/

http://www.disclose.tv/action/viewvideo/18809/Ed_Leedskalnin_flywheel/

[dodoshlodo]

Can anyone of you electronics guys answer a question for me concerning the Joule Thief? OK my question is this:
The plans I have call for a 1k resistor.  From everything I have learned in electronics thus far, resistors limit the flow and dissipate overage as heat.  This seems wasteful to me since the idea of this device is to improve efficiency, as in use all or most of the available energy in a battery or similar system.  I am wondering why the resistor is needed?  If it gets "warm" at all it is wasting power correct?  Is this required to protect the transistor?

I would really appreciate any input here as this is my first Joule Thief.  I know they have been around a while and I have a pretty good idea on how they work, at least in relation to the lighting of LEDs.  I am also going to experiment with these using supercaps as the power source both with, and without batteries.  This will all be tied into my work with earth batteries from which I can already light an LED.

If I need the resistor to protect the transistor, then fine, that's the way it is.  It just seems a little counter intuitive from my limited electronics knowledge at this point.  Thank you.
Bill

Hi Bill,

The resistor is crucial for a JT to work. It is required to get each coil to fire into each other setting up the oscillations. The higher the resistance the higher the frequency the lower the Amp draw... So we want the resistance.
I just got my JT running a large 40Watt Fluoro Tube on 2xAA's!

Im new to this forum so i thought I'd show u guys my JT's so far (not including the big Fluoro Tube one - havent made a vid yet)

Ive been able to recover a completely dead battery with my JT - a battery that wouldnt accept a charge from a conventional charger:
http://www.youtube.com/watch?v=GFW1d5G6NnM
http://www.youtube.com/watch?v=EWq2GNpbU_I
http://www.youtube.com/watch?v=PlfAcMGwfsM
http://www.youtube.com/watch?v=qIdohgylDTM

-shlodo

[Mk1]

@Dodoshlodo,

Welcome , Nice vids , and editing , even astral hendrix , great work.

Thank for sharing with us !

Mark

[Mk1]

@all

real important , for understanding the jt

http://www.youtube.com/watch?v=G6ooNR39xxc&feature=channel_page

There are 4 to watch , good night!