This transformer I pulled from an unknown circuit board is making me do some serious trippin! 0_o
So basically this transformer has both the primary and secondary wires on the same side, which has me really confused. I'm just wondering if this is actually a transformer or if its some other component that I don't know about.

 

If you look at the first picture you can see that there is a divider on the bobbin. One winding is one side of that divider and the other winding is the other side of it. The divider provides more reliable insulation between the two windings than when they are wound one on top of the other.

 

Ah i see! Thanks a bunch! Saved me a lot of trouble!

 

You will also find MOT's Microwave oven transformers wound the same this separates the hi Kv winding.
Max.

 

Oh I see! Thanks a bunch! Saved me a lot of time!

 

This transformer I pulled from an unknown circuit board is making me do some serious trippin! 0_o
So basically this transformer has both the primary and secondary wires on the same side, which has me really confused. I'm just wondering if this is actually a transformer or if its some other component that I don't know about.
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Two wires on one side and three on the other? Best guess is that the two wire side is the primary. If you can, put a low AC voltage on the suspected primary and measure the voltage across the two outside secondary wires. If you get 1/10th the voltage then you would get 12 V out with 120 V in, right?
Finding current. Take your voltage guestimate to some distributor's catalog and compare physical type and size to other transformers.