Yes, good interleaved diagram. One other thing I did not think about
until later is that the butt stacking gives it more tolerance for the
unusual DC balance a microwave oven transformer experiences.

As I said, welding silicon steel might prove difficult, and the type of
rod you use might not have great characteristics as a transformer core.
I've torn apart and rewound a lot of transformers but never a welded
one. But I think you should give it a try, if you have spares then if
the first attempt fails you can always try a different approach.

Friendly regards,
Bob



On Thu, Aug 22, 2013, at 03:47 PM, veegee wrote:

> Is this what you mean by "interleaved"?
>=20
> http://upload.wikimedia.org/wikipedia/commons/c/c2/EI-transformer_core_in=
terleaved.svg
>=20
> If so, it seems that the MOT was not originally interleaved. The weld
> was less than 2mm deep, and once I cut it with a hacksaw, the entire "I"
> segment hinged right off (the uncut weld on the opposite side being the
> hinge). Doesn't look like it was interleaved.
>=20
> If I am able to arc weld it back together, shouldn't I be able to get it
> back to the performance it had originally if this is the case?
>=20
> ---
>=20
> Upon reading this:
> http://en.wikibooks.org/wiki/Electronics/Transformer_Design
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> It says there are typically two types: interleaved and butt stacked. It
> looks like my MOT is butt stacked, like this:
> http://commons.wikimedia.org/wiki/File:EI-transformer_core.svg

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