Well, I got a $5 microwave oven and tore it apart to find that it didn't have a toroid transformer in it. sigh. The transformer didn't look at all that easy to pull apart, either (I'd have to pull the primary off before the secondary). the good news - I didn't destroy it and it does work so my shop now has a coffee warmer.
Is there anyway to tell what kind of transformer is inside one? At $5/pop, this could add up fast, not to mention what to do with old microwave ovens... Could people that have gotten toroids (sounds like a disease...) from them tell me the make of microwave oven they got theirs out of?