Transformers

I have see alot of transformers in my day. But the other day a customer brought me in 2 transformers. He has no idea what they are from, if its step-up or step-down, v(in) or V(out). I have tried to search the part numbers on the internet but to no luck. Only one has a brand maked on it (they both have pns). I emailed the one company and they still have not gotten back to me. Any one have any suggestions on where to look?

How about giving us the brand info & part numbers. A picture would help.

How about just picking one winding, Putting it on a Variac and testing the others to see what voltages you get. By doing that it shouldn't be too difficult to figure something out in the ratios.

Than put a Load, like a Light bulb in some of the leads, with an amp-meter and volt meter.

In less time than Searching the Internet, you can probably figure it all out.

Forgot To Mention: A lot of Transformers are "In House Numbers", With Little to No Info Available.

Take care........Gary

will do thanx for the help.