Joule Thief

[resonanceman]

Gary,

Put a load on that JT and you will have it. I have found that when I have a heavy load on the circuit is when I get the best charging.

And the biggest voltage spikes I checked this with my scope as well. I can tune the JT with a pot and get it charging every time now.

-Altrez

Altrez

I agree  with you  ........

I guess I like  dong it the hard way .

I want to  make  a  portable battery  charger ...... I want to be able to  attach the  charger to the back side of a  AA battery holder .
I want the charger to be no larger than the AA battery .

I  can't  think of  a load that would work with this particular  project.

gary 

[gadgetmall]

bill i have to say that you cant listen to people, i have found in this world that i cannot trust anyone or anything not even myself but that i must prove it myself to know. and yes i said i dont trust my self but have to prove it to myself. i have changed my thoughts soo many times that i see even i make blind assumptions sometimes and have to prove it.

that being said, if someone tells you something, go prove it! right or wrong devise a way to prove it! 

i will honestly say that a cap will only charge in volts what it is supplied so that means your cap is getting 2.7 volts. since your not seeing it on a scope reading that tells me that the additional voltage is hidden in temperary spikes. a simple way you can prove it is to scope the ground. im fairly certain that these spikes roll over the planet with the magnetic lines much like waves in an ocean.

now for the energy density of your 650f cap. we know that a single farad is one amp for one second right?  so we multiply the 2.7 times 650 and we get 1755 now keeping to our rate of measurement that is watts second. to get watts hour we divide by 60^2 (60 seconds times 60 minutes or sixty to the power of 2 equals 3600) so divide 1755 by 3600 and you get 0.4875 watt hours  so that cap stores half a watt under normal measurments.  yes its low but consider the batteries  2700mah thats 2.7a hours. so  1.5 x 2.7 = 4 watts.  if the batteries are rechargable then 1.2 x 2.7 = 3.24 watts hours

caps unfortunately never have really stored that much energy, but if you consider they are a "static" charge then its a crap ton! caps do not have a chemical reaction! thats why they last for so much longer than batteries!

the reason you think they store so much more is because you have been able to really stretch the work you get done with them! first law of going green is energy conservation and thats one thing this forum has really been able to achieve!

i must say if anyone scopes a earth battery please post a pic! that is something i would love to see!

Artic These Ultra caps are chemical and contain Electrolyte . They are far stronger than a car battery when charged to 2,7 volts . Again these are not super caps They are new technology and are replacing Lithium Ion batteries in Electric Vehicles . However they can be recharged 1 million times and can be recharged at the same rate of discharge .
The Electric car  manufactures have devised a way to recharge them quickly while braking . Cool.
Gadget   

[nievesoliveras]

...
@Jesus .Hi .  I'm making it . What toroid are you using if i might ask without hunting thru miles of threads Sir ?  .

Gadget

It is the same one I used on the original circuit.
I just dont know how it is called.
I pulled it out from the power supply cable of a monitor I had.

Jesus

[gadgetmall]

It is the same one I used on the original circuit.
I just dont know how it is called.
I pulled it out from the power supply cable of a monitor I had.

Jesus

Cool thank you . This is one of those Big Ferrite Chokes . I got one or two . Nice. good work by the way . fantastic .

GB

Albert

[jeanna]

i must say if anyone scopes a earth battery please post a pic! that is something i would love to see!

Hey Art,

try this:

http://www.overunity.com/index.php?topic=3500.msg184234#new
it is reply 2274

a scope of a EB.


jeanna

edit
the markers are slightly too close. I probably was 2.4MHz not 2.5MHz. Either way it is there today too. And on the copper to copper today too 2.22MHz!