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Author Topic: Single AA battery to light WHITE LED for long-long time  (Read 186803 times)

hartiberlin

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #75 on: March 14, 2008, 05:24:34 PM »
Try this circuit.
Saves 2 diodes losses and light output doubles.

Regards, Stefan.

@Groundloop,
please let your battery run on it and see, how low the voltage will go.
It will probably stay around 0.5 Volts for a long time and really suck up
environmental energy this way.

@All,
best will be to use a 3 wire parallel bifilar coil on the toroid.
Best would be to drill the 3 wires together before winding it ,
so the coupling between the 3 wires is highest,
like in a Bedini coil.

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #76 on: March 14, 2008, 06:16:30 PM »
Stefan,

Yes, I will keep the circuit running until the LED goes dim.
I do not know how long time that will take.  :D
I will try your ideas but on a new circuit.

Groundloop.

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #77 on: March 14, 2008, 08:42:20 PM »
@All,

Here is my 9VDC version. If I use a fully charged battery then the LED will light full bright.
With a depleted (5,29V) battery then the LED will still light dimly.

The resistor is controlling how much current to use. If you use a lower value then this circuit
will run from any voltage.

One funny thing, with my high Ohm resistor and very little current usage from the battery,
the LED will only light when connected ONE way. If I turn the LED around then it goes black.

Any ideas why this happens?

[EDIT] I changed the 2N3904 to a PN2222A. Much better transistor for this application.

Groundloop.
« Last Edit: March 14, 2008, 09:07:52 PM by Groundloop »

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #78 on: March 14, 2008, 09:50:19 PM »
@stefan
Thanks for the schematics

@groundloop, stefan, zon, amigo

My vote is for "negative resistor" theory, since it is consistent with QED and the work of Bearden and Bedini.  However, we cannot exclude any possibility at this point, to include hitting resonance with the Earth's magnetic field.  The one problem with Earth field theory is that we are not in the ELF frequency range, so it is difficult for me to see how this extra energy is entering the circuit at tens of kilohertz. But anything is possible.

My personal suspicion is that we are possibly hitting the internal resonance of the coils and toroid, and pulling energy from the local active vacuum which is deposited into the battery and/or capacitors. I suspect the sharp gradient of the switching circuit has something to do with this, but again, this is purely speculation on my part.

« Last Edit: March 14, 2008, 10:32:57 PM by Feynman »

magnetoelastic

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #79 on: March 14, 2008, 10:01:48 PM »
What happens when the battery is removed? 

The LED goes out

Therefore, the battery is providing the power for the LED

No mystery.

magnetoelastic

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #80 on: March 14, 2008, 10:03:59 PM »
This is very similar to the type of circuit in an 'analog' quartz watch.  The battery pulses a coil, that turns the hands.  A tiny button battery can run one for over a year.

OU?

no!

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #81 on: March 14, 2008, 10:06:33 PM »
Groundloop, I missed that spectrum analysis!    Wow !!   Very exciting.  Harmonics in megahertz?/?  muhahahahhaa

@magnetoelastic

Bedini circuits are OU.  This is based upon Bedini circuit.   But you are right.  To really prove this properly, we need to figure out how to run it using capacitors.

Offer me solutions, offer me alternatives, and I decline!
http://www.youtube.com/watch?v=-qhWf8v15AU

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #82 on: March 14, 2008, 10:16:37 PM »
@magnetoelastic,

Nobody in this thread has claimed that this circuit is a o/u device.

What is special with this circuit is the ability to light up a LED that normally
need a much higher voltage than 1,2 Volt.

Groundloop.

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #83 on: March 14, 2008, 10:20:17 PM »
Yeah, I agree.  We don't know if it's OU .   But strange enough to warrent ... EXPERIMENTS!!!   :D  8) ;)



*EDIT:  @groundloop
Just an interesting note....

I took the over harmonics and divided by base frequency in your circuit:
2Mhz / 62500hz = 32
4Mhz / 62500hz = 64

Could these be artifacts or are they real?  In music, these overtones would be 5 and 6 octaves above the fundamental.

*EDIT:
(http://img231.imageshack.us/img231/289/groundloopoctavero7.jpg)
« Last Edit: March 15, 2008, 05:48:38 AM by Feynman »

Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #84 on: March 14, 2008, 11:27:57 PM »
@Feynman,

The spectrum analyzer could have picked up other stuff, I admit that. My computer, wireless telephone, adsl modem etc. can also affect the antenna. So don't take the scan as 100% proof of over harmonic oscillations. I will check better next time I measure. For now the circuit is running well and I want to let it run until the LED goes out. Then I can change battery and do another scan of the circuit.

Groundloop.

Feynman

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #85 on: March 15, 2008, 12:11:34 AM »
@Groundloops

Sorry, I wasn't trying to suggest they were interference (I think the harmonics are from the circuit)... I meant... 1) are the harmonics artifacts from the DSP in the spectrum analyzer/antenna and if not, 2) what are the practical significance of the harmonics?   Are they caused by the harmonic-rich sharp wave?  Why five octaves up? 

I think the 2Mhz harmonic comes from the circuit.  It's an exact multiple of 32, so it's five octaves higher.  (Take 2,000,000hz / 62,500 hz) = 32.  Then 2^x = 32???  Well x = 5, so five octaves.

Anyway Faraday cage is one way to know for sure, maybe measure inside your microwave   ;).   

@Zon

The higher frequencies don't mean your circuit isn't 25-350khz.... it just means there are higher frequency 'reflections'. I think your circuit is probably base freq 25-350khz. We are still trying to figure out what this means.  Groundloop is just seeing higher frequency echoes.

@ Stefan

I agree with your ideas, I think Bedini style is good idea here.

@all

No mail today. Just opened old tape deck , no toroids, but now I have some nice inductors and caps!  I'll open an old computer PS and see if I can find a toroid to get a replication going. I'm interested in the phenomenon here, what exactly is causing this... is this just a really efficient LED driver or are we dealing with something more?


Groundloop

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #86 on: March 15, 2008, 12:18:49 AM »
@Feynman,

OK, now I get it. I think there are over harmonics. When I look at the scope there was very sharp spikes.
So the oscillation is spike like. If the pulse is somewhat like an square pulse then there can be all sorts of over harmonic frequencies. I do not have a Faraday cage right now. I'm working on my version 3 right now. Will post later.

Groundloop.


gyulasun

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #87 on: March 15, 2008, 12:19:05 AM »
...
One funny thing, with my high Ohm resistor and very little current usage from the battery,
the LED will only light when connected ONE way. If I turn the LED around then it goes black.

Any ideas why this happens?


Hi Groundloop,

It happens because the switch-off pulse (I mean the induced voltage due to the collapsing flux just after switch-off) has got a definite polarity (usually it is opposite to the supply voltage) and LEDs need forward voltage polarity to give out light.  So if you turn it around, it will get reverse voltage polarity, hence no light.  You can check pulse polarity with your oscilloscope of course.

Gyula

amigo

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #88 on: March 15, 2008, 03:05:31 AM »
Perhaps we should also explore why does 2N2222 perform better than 2N3904. I have noticed this over and over again in the past months while experimenting with the Joule Thief and my modification circuit.

2N3904 appears to be a poor performer while 2N2222 excels compared to it, yet when measured, both transistors had similar hFE here, so it must be some other characteristic that contributes to overall LED brightness and longevity.

I'm going to run more tests this weekend just to see what happens and report here...

supersam

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Re: Single AA battery to light WHITE LED for long-long time
« Reply #89 on: March 15, 2008, 03:12:22 AM »
@all,

if you look at all of the numbers in this thread, in the rodin math type base nine i think you will find  alot of, 1,2,4,8,7,5's, i wonder how the 3,9,6's can be incoporated to make this work.  the rest of the math seems to be in place!  just a thought.

lol
sam