According to Don Foreman :
On Fri, 13 Jan 2006 18:27:13 -0500, axolotl
wrote:

jim rozen wrote:

If the varnish is stripped off there will be one giant conductive
shorted turn. The transformer will smoke.

In this you are mistaken. The steel is a magnetic material. The
insulated laminations reduce the eddy current losses. It is not unusual
for laminated cores to be welded to reduce acoustic noise. A solid lump
of iron would still function as a (lousy) transformer core.

Kevin Gallimore

It would be a very hot lousy transformer!

But only because of magnetic eddy currents, not shorted turns..

Enjoy,
DoN.

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