Electronics > Projects, Designs, and Technical Stuff

Custom transformer calculation

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T3sl4co1l:
A transformer is a transformer, doesn't really matter how you're using it.

Power companies use CTs for parasite-powered fault detectors that hang on power lines.  Those only need a few watts of course (though they'll absorb hundreds under those momentary fault conditions).  CTs are also used for mechanical power in power and industrial application (i.e. powering a relay).  20W isn't unreasonable, you just need enough cable to carry the current.

Tim

David Hess:
Rotary transformers are a real thing and do not require any winding and unwinding.

https://en.wikipedia.org/wiki/Rotary_transformer

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