Joule Thief

[gadgetmall]

    http://youtu.be/cK6BIuwd_2c

[lasersaber]

New video update here: http://youtu.be/SdXAjT2QPiQ
In this video I also show the dielectric absorption effect that can be very deceiving.

Forum Discussion at:  http://laserhacker.com/forum/index.php?topic=70.0

Updated schematic coming soon at: http://laserhacker.com/

[NickZ]

  After watching the latest LS video, I would have to say that in my opinion, it is not just what he calls the "bounce back effect" from the capacitor.  As the capacitor is actually recharging itself as in the Captret tests, but it won't keep up with a higher draw from the AC bulb like the one that he is using. That is why the bulb goes to a lower brightness output level, and will maintain at that output, possibly forever.
  If a few carbon/Mg cells are connected to the capacitor, it will maintain it's higher output to a more useable and higher degree.

  @Gadget:
   Please disconnect the AC breakers, to see if that capacitive link from the grid is what is keeping your system from discharging. That will help to keep us all from pissing into the wind.
 
This is what it's doing for me (video below): You don't even need a cross over circuit, as just an Av plug will light off of the capacitive link,  by itself.  The cross over circuit just amplifies this same effect, using the capacitor's Captret self charging ability.  Me thinks...
http://www.youtube.com/watch?v=Xur_VChGdzE

[gadgetmall]

Nickz I also agree that what others are seeing is some kind of itty bitty recovery . Mine is not . I know the difference and can spot recovery a mile away . The people that think this is recovery are not adding the parts !
before i made this mad the Ls circuit was just a great circuit and it would appear to charge then drop off . that is not happening here .  Also I told you that there is no EMF in the areas . You can check emf with a good Android phone and entity detector . It is very sensitive.

Also you explination of the led cannot keep up with the charge when brigyht is a GREAT observation ,exactly like mine  and you explained at the GHOST lite (dim) led allows the charge to happen while displaying part of the work in dim light . EXACTLY!

to satisfy you and Myself i disconnected My breakers and set the first 220setup outside  in the cold barn . No electricity out there in the middle of 2 acres . I checked before hand and it is setting solid at 1.309 @ 1:09pm .This is the same nicad that had a resting voltage cold at 1.228 two days ago . see what i mean

the other two are still gainig;) no connect to anything external at all ..

Also pissing in the wind? all you have to do is add one diode and a disk cap  to prove it to yourself:) .

Waiting near my fireplace as it is cold outside .

On my 4th circuit now and have three running themselves... Next one is high voltage Ecore the Shocker and it lights  any bulb with 1.2 volts

[xee2]

This bounce back effect for electrolytic capacitors is well known to electronic engineers. It can be avoided by using mica or film capacitors. These have less capacitance than electrolytic capacitors, but if the circuit is truly self running it should not need a large capacitor value.