MEMM

[PaulLowrance]

Hi,

I updated the MCE experiment
http://peswiki.com/index.php/Site:MEMM#How_to_measure_MCE

Regards,
Paul Lowrance

[MeggerMan]

Hi Paul,

Paul Lowrance wrote:

Any word from Naudin?

No nothing yet, he is usually very good in getting back to me, so I can only think he is deep into some research at the moment.

Paul Lowrance wrote:

Don't you think it's important to degauss the core for the MCE experiment?

If the flux polarity can be switched at 24khz and above then cannot see why you should need to worry about degaussing it.
As I understand it, you only degauss something that can retain a magnetic field, like materials used for a permanent magnet or a piece of audio/video tape.
e.g.
If you place a screwdriver into a coil of wire (say 500 turns) and pass DC current of a few amps into coil for one second the screwdriver will be magnetized and will stay this way for many months.
I once made up a coil on a piece of 15mm copper tube for a mate of mine who is a plumber, and he thinks its great that he can now magnetise all his tools using a drill battery pack and this coil.

Try placing a powerful rare earth magnet on your core, remove it and then see if the core can attract a small piece of soft iron.

Regards

Rob

[PaulLowrance]

Now I see. You thought I was talking about the MEG when I was talking about the MCE experiment. In the MCE experiment the core must be degaussed to get accurate MCE readings.  The purpose of the MCE experiment is to determine how effective a magnetic core is for "free energy."  Anyhow, the MEMM wiki should clarify this. :-)
http://peswiki.com/index.php/Site:MEMM

Rob, in your conversations with Naudin did it seem he encouraged people to replicate the MEG?

I just cannot understand why Naudin did not publish any details about his attempts to close the loop. His MEGv21 documentation was superb, but the other versions were not fully documented.

Regards,
Paul Lowrance

[MeggerMan]

Hi Paul,
No, I knew you were talking about the MCE experiment.
You have a Metglas toroid which should have the same properties as the Metglas cut C core.
The toroid should be able to handle 25 to maybe 100khz pulsed current.
Therefore I would have thought that you should not need to degauss the core between switching polarity.

Re. JLN MEG
I think it was the fact that the resistor did not heat up quickly enough to show the level of power shown in the scope.
It looks like that was his main concern  that stopped him from exploring it further.
He agrees with Thomas Bearden's claim and managed to get the same results.

He also says that a COP >1 will only be confirmed by a closed loop.
Reading between the lines, I think he would be very pleased to see someone finish what he started.

He managed to power a 9w fluorescent lamp from 3w input, so I would have thought that it should be possible to work out the equivalent power to produce the same amount of light or supply it with enough mains power to create the same amount of light using different balast resistors and measuring the current on a true RMS meter.

regards

Rob

[MeggerMan]

Hi Paul and anyone else following this thread,

Just thought I would update you on my progress at the moment.

I have ordered the following:

enamelled copper wire:
1 Kg of 0.4mm
0.5Kg of 0.5mm
0.5Kg of 0.6mm

test equipment:
Tenma 72-7760 DMM
Tenma 72-960 LCR meter

components:
4 x TL494 PWM controller
2 x TL494CDG4 PWM controller
2 x UC28025DWG4 PWM controller
4 x 2SK3586-01 100V 73A 0.025R power MOSFET
2 x CASE, DESKTOP ABS+AP 225X165X90
5 x 1N5820 schottky diodes 3A 20v
10 x 1R resistor 0.5W
50 x 6R2 resistor 0.5W
4 x 15V 5w zenner

Parts outstanding is 2 x LCD temperature meters, single sided PCB, PCB drafting sheet, tin plating powder.

I have opted for two types of controller chip, the TL494 which you know about and the UC28025.
The later is surface mount with 0.05" pitch so will save drilling the 16 holes in the PCB.

I have chosen this because:
1. It was in stock at Farnell (quite important).
2. Up to 1.5A of output current to directly drive the MOSFET gate (uses a totem-pole outputs).

At the moment I am trying to figure out the best way to mount the output coil formers onto the core.
I have some Kapton sheet and various plastics I can try.
Then I need to build a rig to sit the C core into for winding.

Looking on the TI site there are some PWM controllers that can obtain a 97% efficiency with the ideal conditions.

Regards

Rob