Joule Ringer!

[totoalas]

Selfsustain cfl - mopozco

Quest for OU XIV -- TROS solar "selfsustain" - YouTube

[minoly]

Quest for OU XIV -- TROS solar "selfsustain" - YouTube

wish he would show the voltage on the battery before and after the run... give us some hope
We have tried that method in the past right after watching Lid show it with the Doc's SEC some years back. great concept though. maybe wrap the LED's in some tinfoil so no light gets out

[Lidmotor]

Xee2 replication video

@Xee2 and All
Here is a video showing my replication of the 12 volt transformer LED light circuit. I could not find the exact bulb but the Lights of America bulb worked. I did a few modifications to the circuit to make it an automatic on/off situation like a garden light. The 1 meg pot adjusts the sensitivity and light output. This will run on 6volts also but of course there is less light. It is a nice, easy, effective circuit---and makes no noise.

Xee2 LED light replication - YouTube

Lidmotor

PS---You can put a diode off the collector and use this as a solid state backspike charger also.

[totoalas]

@Xee2 and All

Lidmotor

PS---You can put a diode off the collector and use this as a solid state backspike charger also.

As always good results

Mopozco used the bemf to light some led to charge the solar back to the input
in this case must be at least 14 v to top off the batt voltage

cheers

totoalas

[xee2]

Here is a video showing my replication

Thanks for the feedback. I like your auto on/off mod.

[SkyWatcher]

Hi folks, well I again rewound my ferrite e-core, just testing many different setups to drive cfl's and leds.
This time I kept the 28 gauge bifilar primary and then decided to see how this would drive leds in parallel using 12 volt input.
So I put 2 turns of 18 gauge on top as secondary and this is powering 12 leds to full brightness, though I need to scrounge up more leds to add to it.
It seems efficient at powering the leds, if anything, it's an easy way to power leds in parallel from a 12 volt source without worrying about resistors, because the pulsing seems to balance things nicely.
peace love light

[xee2]

120 VAC LED bulb lit using 1.5 volt AAA battery.

video >>>> Joule thief with 120 VAC LED bulb - part 3 - YouTube

[Slider2732]

Excellent production again xee2 and again very clear instructions

My chosen transformer has 2 inputs and 2 outputs, but had supplied 12V to a radio from the mains input....is it useless ?
Can find another with 3 in and 2 out, just wondered.

[xee2]

My chosen transformer has 2 inputs and 2 outputs, but had supplied 12V to a radio from the mains input....is it useless ?

This circuit needs a center tap transformer. I used a 12 volt transformer, but I think most any voltage will work as long as it is a center tap version. However, I have only tested with the 12 volt transformer.

[Allen Burgess]

Xee2's circuit.

I replicated Xee2's circuit and tried an additional 120 volt LED bulb in parallel. The second bulb glowed with equal brightness. A string of additional bulbs may work like Lasersaber's array.

[Slider2732]

Equal brightness
Was the current 2x more ?

Thanks xee2.
Tried it last night, with a much smaller 3 pin/2 pin and got completely nowhere
Got no LED bulbs here though and used a neon.
Was wondering about those disposable camera transformers and was why I tried it that way.

[Zardox]

Transformer

I have been playing with a similar circuit using a doorbell transformer sold at Home Depot. It is a Heath/Zenith that has leaded 120v primary and center tapped screw terminal output for either 8 volt or 16 volt. I am using a metal
2n2222a transistor and can run multiple Lights of America 2 watt led bulbs.
However I would like to point out that even though this works well I still can't figure out how to make it as energy efficient as the Fugi circuit.

[xee2]

Was wondering about those disposable camera transformers

Camera transformer should work for 1.5V or 3V, but I do not think they will handle 12V. However, I have not tried them. It may be necessary to alter circuit with some camera transformers since some have tap on the output coil. The circuit I posted is just a Joule thief circuit with a bigger transformer so I could test with a 12V input.

[Slider2732]

Zardox and thanks for your info, as well as xee2.

I wasn't around for the Fuji stuff, so this is a bit fresh. Will get one of these running by hook or by crook and post something useful

[Zardox]

The circuit with the doorbell transformer is running on 12 volts. I am playing trying to tweak it right now as I think that we are on a good path. What I was saying about the Fuji circuit was that we can already run a couple of these bulbs all night with one AA battery. So in theory with 12 volts using voltage dividers you could run 8 separate circuits. With that said I think that I have just figured out how to run a 7.5 watt Feit bulb off of your circuit. I will post as soon as I have this thing stable.