Joule Thief

[jeanna]

... I don't see where to go with this other then night lights which is good enough for me.

What is the max time anyone has ran led lights off of these units to spare me the long route?

Remember infringer
lights are used in the night.


You must have missed the posts of lighting fluorescent lights.
Mine lit a 18 inch tube for 5 1/4 hours which is most of the evening on one AA battery.
Xee2 told us his went for I think it was 10 or 11 hours. a 4 watt tube.

Both these things are too bright for overnight nite lights. They would keep you awake in the next room!

We are having a good time here, wanna join?

btw there is no good answer to your Q. A regular joule thief runs a dead battery out. How long depends on how dead the battery was.
Otherwise, a light run off the secondary can last for 20 hours.
20 lights the same.
They are really only using the transistor.
When the transistor uses up the battery they go out.

jeanna

[resonanceman]

Hi

There are over 850 pages in this thread!  WOW! 

Can someone point me to a schematic and parts list for the recent, best, working, what you guys & gal are using,  Joule Thief?

Thanks
DonL

Don

Here are a few links

this one is for   the  5 for $1 Toroids .....  they are  a good place to start .

http://www.goldmine-elec-products.com/prodinfo.asp?number=G6683

Here is  a  LED  that  I have  got .  They are not the brightest   available  but they are reasonable .

http://www.besthongkong.com/product_info.php?cPath=75_1_14&products_id=132


The  schematic  below  is  for  what I have used  as a basic  JT all along .
The  dots  by  the  coil ends  are to mark the start of the windings
This is important ......  if it is not hooked up  start of one  wire with the end of the other it will not work .

I suggest  you   use a pot in place of the resistor .
With your first   JT  it does not matter ........when you  are trying lots of thing  it becomes very important .

Once  you get  a JT to work  you can start  on  secondarys .....or getting more power .    .......or lighting more LEDs .. 

The  schematic shows a 2N3904  transistor   a 2N2222 works  well too .
My favorate  transistor  so far is  2N3055

good luck   





gary

[innovation_station]

i dont know anything bout thease cordless fone rechargeables i have here but they really charge up fast
i only used 2

then to the big cap the big cap fills damm fast!!

and those little batteries get charged to like a lot more than they should be i know this in bout 10 - 15 seconds im pushing 30 volts out the string to the big cap and they keep riseing .. 

probally not safe but who knows i might try the 12vdc 3.6 ah on this setup off the 35v 6800uf cap

see what it does ...


ist!


ok  what ever im doing here is dammmmmmm intresting ...  ill build a compleate unit then video it

it charges the 12 v faster in this unit than the last one ...

[dllabarre]

Thanks @Jeanna & @Gary for the instructions, schematics and URLs

DonL

[resonanceman]

i dont know anything bout thease cordless fone rechargeables i have here but they really charge up fast
i only used 2

then to the big cap the big cap fills damm fast!!

and those little batteries get charged to like a lot more than they should be i know this in bout 10 - 15 seconds im pushing 30 volts out the string to the big cap and they keep riseing .. 

probally not safe but who knows i might try the 12vdc 3.6 ah on this setup off the 35v 6800uf cap

see what it does ...


ist!


ok  what ever im doing here is dammmmmmm intresting ...  ill build a compleate unit then video it

it charges the 12 v faster in this unit than the last one ...

IST

before  you try that you might want to  check U tube 
I  saw a few  videos  a few years ago of people  blowing up  cell phone  batterys .
Some of them    blew them up  by connecting  them to a car battery

They  go   off like an M80 
they  also  have  a  metal  case .......so shrapnel  is  very likely


gary