Re-Inventing The Wheel-Part1-Clemente_Figuera-THE INFINITE ENERGY MACHINE

[Qwert]

Hi


Do you have any link to detailed explanation about laminated core ?  I have to understand how it is build, work and how it is produced (the steps involved).

Maybe in Europe it does not work, but in the US when I have a question, first I try to find an answer on internet, usually on google.This time I've just put the two words "laminated core" in the proper box. I guess, the short and appropriate answer could be this, from "wiki-answers": http://wiki.answers.com/Q/What_is_the_purpose_of_laminating_an_iron_core_in_transformers

"What is the purpose of laminating an iron core in transformers?

Answer:

The reason we laminate the iron cores in transformers is because we want to limit what are called eddy currents. Transformers are basically two coils of wire wrapped around a core of iron. They work by induction. Induction occurs when current flows in one conductor (or one set of windings in the transformer) and the magnetic field that forms around that conductor (that set of windings) sweeps the other conductor (the other set of windings) and induces a voltage. In order to increase the effectiveness of the transformer, we need to improve the way the magnetic fields are coupled from one set of windings to the other set. Iron conducts magnetic lines of force well, so we use that to help conduct the magnetic lines of force from coil A to coil B. Problem is, iron is also a conductor, and it's being swept by the magnetic field as well. If we didn't use laminations, the iron core would provide a place for the magnetic lines to produce (induce) current, and that current flowing in the core would heat the core up really fast and waste energy. By laminating the cores, we break up the current paths within that core and limit eddy currents."

Also, good source of knowledge is, as always, on WikiPedia.

[bajac]

The internet is a good source for finding information about anything.
Here is a pdf document that has a summarized description:


http://www.navymars.org/national/training/nmo_courses/NMO2/module2/14174_ch5.pdf


[size=78%]http://www.magmet.com/pdf/TransformDesignConsiderat.pdf[/size]


Wikipedia: [size=78%]http://en.wikipedia.org/wiki/Transformer[/size]

[forest]

Thank you guys. First I did a research but that had not removed my doubts. I have dismantled EI core from transformer and I did it many times trying to replicate JackNoSkills setup. What always astonished me were a marks on each E or I parts like they are composed from a tiny iron wires pressed together. I always thought laminated means that core is combined from a many separated shapes like E+I parts, but HOW THAT PARTS are made is what I WANTED TO KNOW. I know they are covered by some very thin lacquer but that's all I know.
Can you find information WHEN laminated cores become popular and cheap ? COULD Figuera used DIFFERENT setup of core ?

:-)

[gyulasun]

Hej forest,

In USA patents the oldest mention of laminated transformer cores date back to around 1890-91 when 4 patent applications were filed:
US461135,  US528188,  US581873,  US602218  but they were granted later in different years.

This means that Figuera must have been aware of laminated cores from the year of 1891 (US461135) and onwards.

You can see some drawings on different shapes in the above patents. (I did not search non-American patents to check for dates.)

Gyula

PS:  I use http://www.pat2pdf.org/ for retriving US patents in PDF files (when you know patent numbers, that is).

[Doug1]

Maybe in Europe it does not work, but in the US when I have a question, first I try to find an answer on internet, usually on google.This time I've just put the two words "laminated core" in the proper box. I guess, the short and appropriate answer could be this, from "wiki-answers": http://wiki.answers.com/Q/What_is_the_purpose_of_laminating_an_iron_core_in_transformers

"What is the purpose of laminating an iron core in transformers?

Answer:

The reason we laminate the iron cores in transformers is because we want to limit what are called eddy currents. Transformers are basically two coils of wire wrapped around a core of iron. They work by induction. Induction occurs when current flows in one conductor (or one set of windings in the transformer) and the magnetic field that forms around that conductor (that set of windings) sweeps the other conductor (the other set of windings) and induces a voltage. In order to increase the effectiveness of the transformer, we need to improve the way the magnetic fields are coupled from one set of windings to the other set. Iron conducts magnetic lines of force well, so we use that to help conduct the magnetic lines of force from coil A to coil B. Problem is, iron is also a conductor, and it's being swept by the magnetic field as well. If we didn't use laminations, the iron core would provide a place for the magnetic lines to produce (induce) current, and that current flowing in the core would heat the core up really fast and waste energy. By laminating the cores, we break up the current paths within that core and limit eddy currents."

Also, good source of knowledge is, as always, on WikiPedia.

Then why do they not use the same techniques to form the laminations as they apply to a bucking autotransformer winding to increase or decrease the magnetic feild within the laminations. Simple enough to connect a couple of laminations on the ends. You could go as far as to make the laminations form a multilayer capacitor.
Maybe the trick is in the number of free and mobile electrons and if there are more of them in a given space would'nt it be easier to interact with them using a magnetic field.