Small Transformer

A two wire transformer? They usually have at least 4 wires, right?

A company called Halo Electronics sells a line of E/1 transformers for ethernet signals - could it be one of these? Got a pic?

This is most likely a balast choke.

Where'd it come from? Like BrainWave said, it's more'n likely that it's a ballast. Having 11.67 ohms DC resistance kinda tells me it's a ballast too.

Some DC resistance values for copper wire are: 30 ga - 104 ohms/1000 ft, dia: 0.010"; 26 ga - 41 ohms/1000 ft, dia: 0.016"; 22 ga - 16.2 ohms/1000 ft, dia: 0.025".

With a little measuring and hand waving and beer, you may be able to come up with a fair value for number of turns. From that, you can sorta figure out what its AC reactance is, but you'll need a book what tells you about that sorta thing.

On the other hand, you can hook it up to a variac (if you are skeered of burning it up) and see what the reactance is by hooking up a known resistance and measuring the current.

Thank you guys, I appreciate the input, that's good information Bill

Donald