Re: transformer cores

["BunnyKiller" <bigfoo39-at-xxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

Tesla list wrote:

> Original poster: CTCDW-at-aol-dot-com
>
> Hello all..
>
> just a curious question.. Is there an easily explainable (hah) reason that
> the rectangular or square transformer core has been adopted? induction coils
> generally have a cylidrical or square (cross section) iron core inside...in
> an induction coil, the primary is usually inside the secondary..what is
> gained when they are on opposite sides of a square core?
>
> Chris

Hi Chris...

you have a good one there...   as far as the square or rectangular core assys.
its easier to manufacture the multitude of plates that comprise the total core
all as the same size. the reason why the primary is normally on the inside of
the windings is that the flux produced by the primary is more concentrated upon
the core allowing better field effect. the induced field effect is then
transfered to the secondary with minimal loss. if the primary was on the
"outside" windings, you would see less "transfer" of the field effect to the
core and more inductive effects upon the secondary which would reduce the
effectiveness of the transformer.

Ha ! college does have its merits  ;)

Scot D