Joule thief that could light the whole house

[CG2016]

So ive been making and tweeking for awhile. This unit will light many ( dimmable 120 vac led bulbs) on battery power from 2.4 vdc to 18 vdc.
Shown first is my original unit, then showen is my final unit. .it keeps the current constant no matter how many led bulbs you add ( ive only tested to 10).
I have these connected to my shed and basement lighting and the batteries are charge by my wind turbine.

http://youtu.be/1fp6mlCowsQ
http://youtu.be/zfnoQgN4vBI

[AlienGrey]

So ive been making and tweeking for awhile. This unit will light many ( dimmable 120 vac led bulbs) on battery power from 2.4 vdc to 18 vdc.
Shown first is my original unit, then showen is my final unit. .it keeps the current constant no matter how many led bulbs you add ( ive only tested to 10).
I have these connected to my shed and basement lighting and the batteries are charge by my wind turbine.

http://youtu.be/1fp6mlCowsQ
http://youtu.be/zfnoQgN4vBI

Can anyone find the circuit details on the forum ??
please send a pointer fanks

[CG2016]

Try New 2016 BJL_LED   in the electronics section

[conradelektro]

It is a nice hobby to play with Joule Thief type circuits, but if you want decent light from a 12 V battery it is best to by a DC to AC converter, e.g.

http://www.ebay.com/itm/150W-Car-DC-12V-to-AC-110V-220V-Power-Inverter-Charger-Converter-Boost-Board-/172124189007?hash=item281366b14f:g:FIgAAOSwu1VW3AUl    for about $ 10.--

This example of an DC AC converter allows you to hook up any sort of lamps (110 V or 220 V CFLs or LED-lamps) which consume up to 150 Watt to a 12 V battery.

You will see that the brightness of the lamps is much better than with a Joule Thief (for the same amount of input power).

The modern DC to AC converters have an efficiency of about 80%.

Most people over estimate the light output of lamps hooked up to a Joule Thief. Do a proper comparison (measurement) and you will see.

Here http://www.ebay.com/itm/COMPLETE-KIT-100-W-Watt-100W-Solar-Panel-1500W-Inverter-12V-RV-Boat-Off-Grid-/251401773662?hash=item3a88b6a25e:g:lyIAAOSw9r1WAcsq  you see a complete kit (you have to provide the 12 V batteries) that allows you to charge 12 V batteries with a 100 W solar panel and then you can have up to 1500 Watt 110 Volt AC (via the included DC AC converter).

I just gave you examples. Shop around and you will find better deals. A Joule Thief is a nice experiment, but not for proper lighting from 12 V batteries (in a camper or boat or little cabin).

Greetings, Conrad

[CG2016]

For some reason inverters have a problem with leds. The brightness of the leds was measured and is the same as when run on mains power. Plus this circuit is much cheaper and runs cooler than an inverter. Maybe you could build it and see. Can the inverter keep lighting the lamps on a dead battery like this can? ( Down to 2.4 volts). I doubt it.
Power supplied by the 12 v battery was measured at 6 watts , Pretty good I'd  say.

So try it. You'll like it.