Joule Thief

[Pirate88179]

thanks for the reply kooler. looks like a texas instruments rfid tag? have you tried 'ganging' them for more output?

Can these be put in series and/or parallel?  what if one used like 100 of them?

Bill

[WilbyInebriated]

Can these be put in series and/or parallel?  what if one used like 100 of them?

Bill

i believe so. that's what i am working on bill.

[xee2]

Joule thief circuit that should light an LED for over 7 years with only one AA battery >> http://www.youtube.com/watch?v=a2SwZvE41Ok

NOTE: This is not new, many circuits able to do this have been posted. This circuit seems to give a good trade off between LED brightness and battery life.

EDIT: with 200K resistor, current is 0.61 mA and LED looks full bright (20,000/.61/24/365=3.7 years with D cell)

[kooler]

thanks for the reply kooler. looks like a texas instruments rfid tag? have you tried 'ganging' them for more output?

sorry i didn't get back sooner..
but mine took 22 hours to make.. it was made on the protective screen of a 46'' lcd tv.. this is my biggest one..
i almost cried when it was destroyed.. dumb me taped it to my steel roof to get a really good signal..
well lets just say the wind blows alot here..
i had a friend that thought the thing in one of the pictures of tesla sitting with the spiral coil device behind him..
he always said it was a signal receiver of some kind.. i don't know what it was .. but i wish i could still talk to my buddy about tesla stuff.. .. ..
but NO i have not ganged them together.. i quit working on them after my big one got ripped..
but i will say .. if you are going to build one. spacing between your copper lines is got to be perfect less space is more current and more space is more volts..(kind of ) using a earth ground helps alot too..

robbie

[kooler]

nothing new but trying to get back at it..
just fun stuff.. it has more volts than that but that is what my meter showed thru a 1 uf microwave cap..
i need some bigger transistors.. so i don't have to ganged them up..