Re: How to identify an unknown transformer.
Just one thing that comes to mind with me, this is just biased on some of the surplus power units with transformers I see from military aircraft use 'cold war' etc is that they could be 400 to 1000Hz use as opposed to the standard 50 to 60 Hz domestic. In which case the primaries would provide a low reactance to mains at standard frequencies.
Just a little something else to throw in the mix, if it was from actual aircraft use?
Adrian
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