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Mini AC-DC transformers?

Is there a device, such as a ready-made mini AC-DC transformer I can build directly into a project, so that I can connect it to AC mains... without a wall wart? I was thinking of taking apart a cellphone charger and just building it into my circuit, but it is not really the shape I'd like it to be... it's a lot larger than I would like. Flatter would be good...?

Re-design7 years ago
Transformers are usually built in cube shapes.
micobanff (author)  Re-design6 years ago
Thanks... that was... informative.