I found a transformer from an old kit I had, I think it was the 10 in one electronic lab from GeoSafari. I'm really confused, as it only has three leads coming out of it (instead of the minimum of four I usually see), and can't find the model or part info. Guessing that the center terminal is the common ground and the other two are the input and output leads. Has anyone else ever encountered a transformer with a similar configuration (only 3 leads, all on one side)?
(Sorry if I look like I'm an idiot. I've never really worked with transformers.)
Leads are abused pretty badly. The transformer is about 3/4" on each side.
I just did some testing with LEDs. Current will flow between the second and third pins (in both directions), but not between the first and second pins or the first and third pins. I'm starting to think that the first pin is broken or disconnected, or just a dummy pin.