T1000 For background information, in one of N. Tesla patents - https://patents.google.com/patent/US381970A/en "use a core, A, which is closed upon itselfthat is to say, of an annular cylindrical or equivalent form--and as the eflicicncy of the apparatus is largely increased by the subdi vision of this core I make it of thin strips, plates, or wires of soft iron electrically insulated as far as practicable." There may be some confusion regarding the patent US381970A. If we read the patent and diagrams Tesla talks about using laminated iron strips or wires for the coil core labelled A. Which as he claims is common practice to reduce eddy currents. Tesla then talks about winding two pairs of inducing or primary coils labelled B over the laminated iron core A. The induced or secondary coils C are then wound over coils B. In effect this is how almost all iron core toroidal transformers are constructed. However Tesla goes further and claims... The construction of this or any equivalent form of converter may be carried further, as above pointed out, by enclosing these coils with iron, as for example, by winding over the coils a layer or layers of insulated iron wire. Here Tesla is talking about winding a layer of iron wire over the primary B and secondary C coils. These are commonly called encapsulated transformers having magnetic material inside and outside of the coils. So the copper coils are encapsulated between two layers of magnetic material to enclose or contain the external magnetic field. It's not common knowledge but in reality most standard transformers leak flux like a sieve. We can induce one transformer from another with supposedly closed cores because in reality there not completely closed. My magnetometer arrays can also detect the flux leakage a few feet away from a standard transformer. This happens because the magnetic field from each coil turn links with the turn next to it inside and outside the coil as shown below. Note how the external parallel magnetic field lines tend to repel one another expanding outward. One could ask, if the expanding external field lines form closed loops and cannot cross then how could they induce the coils?. As such it makes sense to concentrate the internal and external magnetic field around the coils to minimize leakage and increase efficiency. AC
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Comprehend and Copy Nature... Viktor Schauberger
“The first principle is that you must not fool yourself and you are the easiest person to fool.”― Richard P. Feynman
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