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Author Topic: Single AA battery to light WHITE LED for long-long time  (Read 185252 times)

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #90 on: March 15, 2008, 04:43:51 AM »
I have started my replication.   It is trifilar , 30 AWG (0.2540mm)  and will be drilled.  I couldn't find any other wire, so no Bedini ratio (0.70) this time around.  But I will be able to try a few different circuit configurations. 

The German beer is in honor of Stefan.   :D

(http://img233.imageshack.us/img233/7343/zon1se7.jpg)


« Last Edit: March 16, 2008, 03:10:35 AM by Feynman »

zon

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #91 on: March 15, 2008, 07:16:55 AM »
@all

Thanks for all your attention.
We just build, see, measure, analyse, make conclusion, maybe some formula.

Here is the whole concept what i got from him.

Oscilation Device  --- Coupling/transform to coil (like third coil what we do) -- put antenna on north and ground to earth at south --- earth energy (we hope) will enter to system via this coil with harmonization --- (we hope) will get VDC --- Charging Battery ---- Inverter  --- we will get VAC enough to use the entire our house.

Oscilation Device could be solid state, mechanical etc and should run within range 30 Khz --- 350 Khz (Harmonize Earth Energy)
This concept i called it "Harmonize Earth Energy Capturing Concept (HEECC)"

If u can build device based on hisconcept, thanks God.
U can give him donate through our lovely forum organization. :)

This concept, i publish to this forum for better our live and save our environment.

regards


zon

« Last Edit: March 15, 2008, 07:43:07 AM by zon »

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #92 on: March 15, 2008, 01:05:23 PM »
@zon,

If you want a tuned antenna (1/4 wave long) at 100KHz then the antenna will be approx. 750 meter long.
Not practical for a free energy device. Then the antenna has to be outside not protected from lightning.

BTW: My battery is now so low in charge that the LED is very dim. It is no longer possible to read a
book in total darkness with the light from the LED. The voltage has dropped to 0,582 Volt.

Groundloop.

hartiberlin

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #93 on: March 15, 2008, 02:21:28 PM »
Hi Groundloop,
just try to use a 4th coil on the core to pulse some  pulses
back via a rectifier diode into the battery.
Then the "dipole will last longer".. as Bearden says.

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #94 on: March 15, 2008, 03:13:04 PM »
Stefan,

I'm playing with different setups. Attached is my newest creation. It was a attempt to "recycle" back some lost energy to the battery. The circuit runs and the LED is at full brightness when run from a newly charged Ni Cad battery(1,2V 600mA). The battery is draining so no free energy. I can't see how a 4th coil will improve anything. The Lentz law will prevent any extra gain in the circuit. I think the trick is to find a circuit that will light the LED at full brightness for the longest possible time from one battery. So an energy saver is better than nothing.

[EDIT] I got 18 hours of full brightness from a 1,2V 600mA NiCad battery. That is approx. 30mA to the LED.

Groundloop.
« Last Edit: March 16, 2008, 12:38:59 PM by Groundloop »

zon

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #95 on: March 15, 2008, 03:38:41 PM »
@groundloop

The antenna not related Harmonized Earth Energy, thus one meter enough. Without antenna it can be but not efficient.

@all

in our circuit experiment, the battery only powering oscilation device (we hope). If we make more efficient oscilation device circuit, the battery will drain slowly. Harmonize Earth Energy come to third coil.
Third coil diameter and turns number depend on the load. u want it.

zon

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #96 on: March 15, 2008, 04:20:35 PM »
I replicated the groundloop version of the circuit with trifilar drill winding.  It's working.

(http://www.overunity.com/index.php?action=dlattach;topic=4223.0;attach=20071;image]http://www.overunity.com/index.php?action=dlattach;topic=4223.0;attach=20071)

...Where to start....

1) lower oscillation frequency is giving me higher output voltage on the LED (16khz is better than 92khz).

2) my analog scope traces look ridiculous; I can see infolded waves float across the CRT inside the standing wave on certain time intervals.  I need to to determine whether or not I am picking up RF.

3) An electrolytic in parallel across the LED gives brighter output.

4) There are definitely very fast harmonics in megahertz which are occuring during the voltage transient. 

5) Using the 1k resistor, I measure a max of around 18V across gnd/coil 2 during the transient.


I will post details soon, still trying to figure out what to make of all this. I will also replicate the other circuits, post full results , scope traces etc etc.






Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #97 on: March 15, 2008, 04:42:35 PM »
@Feynman,

I found that the electrolytic capacitor over the LED did give a brighter LED but the current usage was higher.

Groundloop.

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #98 on: March 15, 2008, 05:04:09 PM »
lol, I just realized that

...I'm wondering if there is a way to combine this circuit with EM's micro-TPU somehow...



Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #99 on: March 15, 2008, 05:31:40 PM »
@Feynman,

Everything is possible.

@zon,

Can you make a drawing describing where your antenna and ground connection should be in your circuit?

Groundloop.

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #100 on: March 16, 2008, 02:49:26 AM »
Okay here's my toroid!  Red white blue windings for home country 'US and A' !!

(http://img218.imageshack.us/img218/691/toroidww0.jpg)

amigo

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #101 on: March 16, 2008, 02:57:49 AM »
More photos from my latests tests; I have taken my own advice from couple of posts back where I suggested to explore why 2N2222 works better than 2N3904.

The configuration now is similar to the original Joule Thief schematic except that the LEDs are not grounded but connected to the + of the source battery like in the Bedini circuit. Left side of the photo is using 2N7000 N-FET while the right side is using 2N2222; both circuits have 7 LEDs each of the same kind (generic super bright white).
When connected to the batteries (~1.3V 2300mAh NiMH) the circuits consume about 10mA of current each (the right circuit was adjusted to consume 10mA by using two resistors in series: 4K7 and 2K to the base of the transistor). The left circuit does not have any resistors - top of the coil on the driver side is directly connected to the base.

Very important note that I have observed is that a DMM connected to measure current will skew the oscillating frequency and boost it up which is obviously inaccurate and should not be done. Have the DMM connected, measure the current, then disconnect it from the circuit and then run the circuit normally with the scope connected.

Judging by the photos, the left side is brighter than the right which shows we should do more experiments with the FET transistors... :)

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #102 on: March 16, 2008, 08:33:00 PM »
Thanks amigo, great work.

The fact that your circuit is only consuming 10mA is remarkable.  I'm sure these sorts of power supplies will be useful as emergency flashlights, as they operate using an otherwise "dead" AA battery.

Here is a picture of the output, measured at the cathode (+) of the LED, using the groundloop version (trifilar) of joule thief.  I will also attempt amigo's and zon's versions as well.  Anyway, with groundloops version and a 23.5mm toroid with 30AWG (0.2540mm) wire trifilar drilled, I am getting just under 20khz as the circuit frequency.

(http://img219.imageshack.us/img219/7654/frequencygb3.jpg)

EDIT:  V/div = 0.2 , T/div = 10us  .. but those transient peaks are real high, anywhere from 2V - 18V depending on where in the circuit you attach the probe.

« Last Edit: March 16, 2008, 09:03:36 PM by Feynman »

turbo

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #103 on: March 16, 2008, 09:21:54 PM »
Yeah, I agree.  We don't know if it's OU .   But strange enough to warrent ... EXPERIMENTS!!!   :D  8) ;)



Hi

I have played with many of these types of devices a couple of years ago and as they are presented here they are not OU devices.
But they can be.
For this to be, you only need to put in a verry small spark gap and make sure the voltage is sufficient.
Im not talking about millimeters sparkgap but rather one hunderth of a millimeter.
Much like when you use two pencils and the tips are almost touching each other.
The miniature spark will imediatly push up circuit performance.
It is in the disruptive discharge.
You also need a couple more diodes of the ceramic HV model to redirect energy back into the battery/capacitor.
A combination of capacitor / neon bulb will also work verry well.
In that case it runs on bemf and the voltage produced is many times higher as the pulsing voltage.
No need to use galvanic coupling, it can be done wit a simple primary coil only.
The capacitor builds up a charge ,and this charge will keep building up untill the voltage has reached a certain value and it will discharge itself thrue the neon bulb.
Mechanical switching works best.


M.

amigo

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #104 on: March 16, 2008, 09:24:16 PM »
Feynman,

I totally agree that these could be used as emergency lights and that is the whole idea for me to explore this because just recently we had a power transformer blow up in the neighbourhood and everyone was without electricity for several hours (late afternoon in winter, dark and cold...). Having lights that would last for hours and hours at full brightness would be a good step towards making one feel better about power outages (if there's anything good about them). :)

I have driven my circuits up to 100KHz but in general they operate from 50-90KHz although depending on the core I use they go down to 25-35KHz as well. There's lots more experimentation needed with different core sizes and wire gauges to find the optimal configuration between maximum brightness and minimum current.

Now if only we could somehow plug in some capacitors in there and have them replace the battery during operation so that we only use the battery to start the process... :D