Joule Thief Charger Recovers Dead Battery 04

[ibpointless2]

When I use your joule thief charger circuit to charge 12 volt to 12 volt it always fries my transistors, but this one with the bridge rectifier works fine?

My dead battery when hook up to this joule thief charger starts out at 11 volts while yours starts off at 18 volts, mine goes down like yours but I was just wondering if there is a certain voltage like 18 that lets you know if a battery is recoverable or if my 11 volts just means that my battery is just more sulfated then yours?

Thanks!

[jerronimo3000]

i guess it would be better to have the coil with 90 turns better than a 22 for charging, right? i noticed that you're using a 12v to charge a dead 12v. does the run batt have to be the voltage u want to get to for the charge batt? i've been running mine off of two AA and got a voltage increase from 7.68 to 8.52 on my lead acid. when the JT was on the charge batt said 10.13v. is this typical for the AA? would increasing the number of turns on the coil up the charging time and voltage? thanks!!

[Eddiev1985]

5 stars my friend!

I love this one.

After a week of tinkering, I cant believe it.

I feel like such a moron!

I had the coil connected wrong....LOL!!!

Anyway, Its working great now, and I cant wait to build a sturdy circuit and do some tests.

I have an identical dead battery lets see if I can replicate this.

Way to go Shlodo!

Eddie

[dodoshlodo]

yeh its all about the coil. gotta have it hooked up right.

How many winds on your coil? wats it drawing?

its a good idea to use a ballast resistor (100ohmor so) in line with the pot, to take the heat off the pot. and a heatsink on the 2n3055.

Record the numbers properly with the charging so we can see wats happening, maybe we can compare results.

good luck, here's my new one Eddie:

watch?v=CJgb6tZWlP0

[armakuni2000]

Great video!!!

[11supaman11]

I never understood the practicality of the joule thief, but now it definitely seems worth it, you may need to revamp that battery anyway though, was sitting around 10,11 in the end when you wanted the 12.

[zebok3]

I noticed that your wireing schematic in your High Voltage Super Joule Theif Resonating 02 video, clearly shows you have the collecter and emitter mis-labeled. This makes me wonder if you know what you're doing? Can you please

help me understand what you believe you're up to? I don't doubt you're getting the spectacular results you're claiming,

but it might help for you to understand what's happening.

[zebok3]

It appears you're charging the emitter of the 3055. This is backwards. Is this your intention? Your milti-meter goes negative at 450 volts. Is it possible the transister is functioning as a negister. The transister is not supposed to function that way, but the 2N2222 should. Ohm's law is reversed higher voltage reducing current. Maybe you can try the 2N2222 in the circuit and compare the results.

[dodoshlodo]

yeh i noticed that, i simply labelled it wrong on the diagram..

the 2n2222 will blow on this circuit, too much current and voltage spikes.

im gonna switch to a power mosfet soon

[dodoshlodo]

at 12V the radiant voltage spikes = 500V

the high voltage spikes are what is charging the battery, purely with potential

[dodoshlodo]

I did a test today, here are my results:

Run=12.07V Charge=11.04V

Charge for 2hours

Run=11.74V Charge=11.60V

Run Battery dropped = 0.33V

Charge Battery Increased = 0.54V

It was pulling 700mA and created noise and heat as well as charging, the battery holds a load and has come back to life completely

[zebok3]

The 2n2222 transister is one of a handfull of NPN's that function as a "Negister" at certain voltages. They begin to function as a tunnel diode and begin to create a negative resistance. Research the "Negister". to find out more about it.

Zebok3

[dodoshlodo]

I will look into this negister thing, are there any power transistors that act as a negister??

it could be tricking the meter

[dodoshlodo]

hey Zebok3... I checked out the Negister thing, very interesting stuff, cheers

I managed to build a very simple led flasher with a negister circuit using a 2n2222

still not sure if that is wats happening in that clip tho, but it seems similar

[KyleCarrington]

@zebok3 Are you referring specifically to the original 2222 in the metal can package, or the newer takes in a plastic package? Thanks

[Can101276]

Nice etheric funnel you got there, REMEMBER faster switching is the key!!!

[Eddiev1985]

Bravo!!!

Hi Dodo, nice work!

I have a battery just like that one and I killed it experimenting with the radiant oscillar light.

A traditional charger or my bedini motor wont bring it back to life.

This video clearly shows that a JT circuit is doing just that.

Very exciting, I'll be thinking about this one all month!

5 stars and a standing ovation.

I'm going to have to build one and prove it to myself now.

Thanks for sharing.

Eddie

[comwarrior69]

hi dodoshlodo, i like the video...

i had a look in your vids but couldn't see anything on your voltage regulator...

Any chance you could make one, or send me the circuit diagram?

Thanks

[dodoshlodo]

yeh no worries, will do when i get a chance..

[comwarrior69]

excelent, thanks

[Pirate88179]

This is an excellent video!!! I think you have gone way beyond Bedini here. Long live the joule thief circuit! Keep up your great work.

Bill

[megavox]

The more your charge the dead battery with this method, the more "conditioned" the battery will get to negative resistance charge, and the better results you will see over time.

[marthale7]

Be sure to open up the top and top off the electrolite inside that battery if you have not done that yet. FYI. Thanks for sharing!

[dodoshlodo]

cheers for the tip mart, but these are sealed lead acid, cant get into em. wat does topping it up do? and wat do u top it up with?

[InventorGadget]

so u can get a lot of old batteries for the "recycling" price, say from old EV-cars, and pulse-charge them up to good! hmm now THAT IS interesting to say the least..

Or if u have / build a EV-car, u never* have to change batteries.. well i like that kind of future :D *=For the foreseeable future until the car brakes down

[Can101276]

This Negative voltage is a cold charge versus a conventional hot charge that kills batteries.

[InventorGadget]

ohh soo sweet! u make me happy :D

[Lidmotor]

Using a bridge rectifier off the E and C looks like a winner. I tried this yesterday and also got good results. I may build a JT with 2 power transistors and a good heat sink just for battery charging. I have a big 40 watt solar panel that will run it nicely.

[dodoshlodo]

yes i would reccomend building a big one Lid. This is no good for lighting LEDS, it blows them all. Ive tried charging smaller AA and it seems to cause a failure in the batteries. The big 12v Lead acids work really well.

I think 2 transistors in darlington pair would work very well, and i wish i had of integrated a heat sink into my design, even the coil gets very hot.

[dodoshlodo]

This coil seems to pull a lot of current... do u know why?

it has about 90 turns... i think maybe i can get amp draw down with less turns..

any ideas Lid?

if i could make the draw more efficient this could be a winner

[m3sca1]

good work- a dead battery new again!

someone told me they reconditioned many batteries using a cordless battery drill trigger.

must be the pulsing that cleans the crap off the plates.

5 from me

[3190423]

Very nice setup dodo! Does it work with normal 1.5 V AA batteries as well?