Pulsed DC Transformer with Embedded Magnets

[ltseung888]

Hi FLEET admirals,

Just a little story...

I have built a (slightly  modified) Gadgetmail's joule thief circuit.
It works. It can light the 4 A while charging a secondary bat.
I swapped the input bat and the output bat and could (almost) recover the
initial configuration (batteries voltages-wise) but during this time
the leds were lighted.
Is it 'OU'? I dunno. It should be about 99% efficient.
I will made a web page with my measurements.

*BUT*
I have not been able to reproduce this circuit! My own setup.
It simply does not work.
Yes, the 4 leds are A but when I A the charging bat they
turn off and the charging effect does not appear.

With the first building I should have stumbled upon some resonance effect.

*SO*
Please don't be upset if you do not succeed to reproduce any (claimed) OU device
and do not too quickly accuse the inventor of fraud...
You, perhaps,  just not (momentally) have the MOJO.

Very Best

Hunting for resonance effect is not always easy.  I took two teams to buy the same components on Saturady to build the basic Joule Thief.  The Shenzhen team achieved success within a couple of minutes.  The Hong Kong team is still stuggling.

They have the same components - transistor, resistance, LEDs, Toroidal core and wires.  The Training video is http://www.youtube.com/watch?v=gTAqGKt64WM&feature=fvst

The suggested approach is - provide a working Joule thief with the same components.  Have additional components as DIY kit. 

The HKIA team just reported success.  They did not solder the parts as in the video.  They connected everything via clips.  In that environment, they needed 2 batteries to light the LED.  They expect that when they got ride of the extra unnecessary wiring, they can use one battery.

[bille]

Yes! I think your right.
A little mojo is required.
But here's an idea.
Maybe the circuit is marginal, in ith respect that when you add the battery to be charged is placed in the circuit it creates additional loading on the transformer. the result could be that the oscillator
ceases to copitulate(stops working) The result is the transistor stays turned on all the time and the leds never come on. You could try replacing the 2n2222 and the other thing might be to reference
the base and protect it during the negative swing. you could use say a in914 from ground to the base. make it so it conducts on the negative cycle, cathode to the base.
I dont know if you were looking for feedback or not, but iwas trying to help without being a smart ass.

Good luck
BE

[ltseung888]

Yes! I think your right.
A little mojo is required.
But here's an idea.
Maybe the circuit is marginal, in ith respect that when you add the battery to be charged is placed in the circuit it creates additional loading on the transformer. the result could be that the oscillator
ceases to copitulate(stops working) The result is the transistor stays turned on all the time and the leds never come on. You could try replacing the 2n2222 and the other thing might be to reference
the base and protect it during the negative swing. you could use say a in914 from ground to the base. make it so it conducts on the negative cycle, cathode to the base.
I dont know if you were looking for feedback or not, but iwas trying to help without being a smart ass.

Good luck
BE

Smart ass is welcome in this thread!

[bille]

Using the left hand rule on your drawing for reply #8, wouldn't the north pole be in the opposite
direction?

[ltseung888]

Using the left hand rule on your drawing for reply #8, wouldn't the A be in the opposite
direction?

You are right.  Other people (Patrick Kelly) also brought that to my attention.  The diagram was from the original Flynn information.  I did not change it.

The lesson is - the replicators with no real knowledge and understanding will fail.  More examples will follow from the various teams in Hong Kong and Shenzhen working on FLEET.

It is expected that they call me when things fail to work.  They have not shared their success results!