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DIY transformer - component naming, and where to get them

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andybrandi:
Hi. I'm planning to build my own transformers. (Of course I could use off-the-shelf ones or just salvage, but that would be no fun.) In this video:

https://youtu.be/s6NyTprQCBI?t=898

you can see the guy using a plastic transformer "skeleton", as well as iron sheets for the core.

Could anyone tell me the proper names of the above parts, and possibly a place to get them from for reasonable prices? (AliExpress isn't helping, and Google only gets me lots of Transformers toys, but maybe that is because I don't know what to search for.)

Thanks!

T3sl4co1l:
Bobbin / former. :)

Tim

strawberry:
https://www.alibaba.com/showroom/transformer-lamination-e-core.html there are other fancy core shapes as well.
bobbin can be made out of FR4 (clean no copper) or electrical cardboard

andybrandi:
Thanks everyone, that clarifies the terminology!

As for buying the laminates/iron sheets, these seem to be quite abundant on Alibaba (thanks @strawberry for the link!), but only in integer multiples of 1 metric ton... guess I'll have to look somewhere else. At least I know what to google for now.

strawberry:
try Indel , Hammond mfg , or other tube transformer makers who could helpout with some raw material
there are some skilled tube amplifier transformer winders out there on youtube as well

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