Re: transferring electrical energy through metal wall

Mark, thank you for the scheme below. It is what I need. In the
prototype of the magnetic circuit, I glued up together the round
ferrite cores, and used a piece of 2 mm-thick steel just to try if the
energy transmission through the steel wall was reasonable. The output
of the secondary coil with the still wall in the magnetic circuit was
1/10 of the output of the secondary coil when the steel sheet was
removed from the magnetic circuit. I presume that the optimisation of
the magnetic circuit could provide an efficiency of transmission of at
least 50% or even more. I am thinking about using "soft iron" for
inductive core in the pressurised version of the apparatus, which will
allow to fix the iron cores into the steel wall and thus make the
vessel pressure-tight. I am thinking if I could use a magnetic field
modelling software package to analyze the magnetic circuit and to work
out the best circuit's configuration, the best magnetic parameters for
the soft iron cores and for steel etc. If you or someone could advice
me a suitable line of action (or software package), I would be
grateful.

Regards,
Va1erian

>    I mean something like this;
> 
>            power input
>         (primary winding)
>             |      |
>           __|______|___
> outside |  _/_/_/_/_  |<-- soft iron or ferrite core
> _ _ ____| |_________| |___ _ _
> _ _ ____| |_________| |___ _ _<-- vessel wall
>          | |_________| |
> inside  |___/_/_/_/___|
>              |      |
>              |      |
>         (secondary winding)
>           power to device


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