Joule Thief

[xee2]

@ jeanna

I wound a toroid with the same bifilar wires for 5 turns, then continued with only one of those wires til it was turned a total of 12 times. Then I added 120 turns for a secondary.

Why don;t you go back to this circuit and change the base resistor from 1K to 10K and measure the battery current. You should still have enough voltage from the secondary to light some LEDs. Use a cap across the base resistor.

[Pirate88179]

@ All:

Here is a supercap I found.  2.7 volt 650 farad!!  It is $78.00.  Check it out.

http://www.tecategroup.com/store/index.php?main_page=product_info&cPath=18_20_39&products_id=162


I believe this would run any and all of our jt circuits for a very long time and be almost instantly "recharged".  it would be great for home lighting applications I think.

Bill

[innovation_station]

mk1 you need to get some garden lights from ramma ... 

2$ each ...   somthing neat happins when the single aaa battery that drives the led GOES DEAD...

lol

hummmmm

are they already selling us jt's lol    it may be the photo cell im not sure yet just noticed it   it blinks tho .....

ist

in any event they make AWSOME POWER SUPPLIES FOR THE JT......

AND JUST THE MOST PERFECT RING HOLDER 

yep im on it i will mod a unit with jt atached ... and 10x the leds .....

[TheNOP]

@IST
i got 10 of those garden lights, from ramma. 

it is the battery, relaxing, chimical reation, that make them blink.
the solar cell might be helping a bit too.
the chip in those light seem to have a voltage threshole a bit higher then the led.

about the solar cells, they output around 2+ volts at around 3+ miliamp in full sun light.



else then a solar cell.
you get a AAA ni-mh 1.2 volts 300 miliamp battery
a battery holder
a very low volt/amp led (i already burnt one)
a 10 ohms resistor
a 1n5819 diode
and a chip relay (might be spdt, dpdt or spst)

[innovation_station]

so we should be able to replace the led with ... a jt  no problem and it will operate off the battery system as is ...  and we now have a solar battery charger designed to work with our nicad battery   so....   now put your cam unit there...  power a cfl ...  or put a jt there power leds charge batteries YOU DECIDE ... 

if you need more ideas im FULL OF EM  AND I GIVE THEM AWAY FOR FREE     i ask for nothing in return .... 

but if im wrong in what i say please kindly correct me ...

ist!