Electronics > Beginners

Power VA and secondary windings.

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davelectronic:
The MOT was just a bit of fun, just to see if a linear power supply with series pass trasistors would be possible. It worked ok, but still very warm, and power hungry. I would imagine the MOT primary as stock is not to disimilar to a heating element due to few windings. But they do the job inside a microwave oven.

I've read a fair bit on isulation class, and other transformer characteristics. Finding a feasible method for rewinding is a bit of a challenge,  mainly due to enamel copper wire is hard to work in small areas. UK prices on large power transformers isn't terrible, not cheap, but shop round and there are a few reasonably priced chassis IE and toroidal transformers.

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