I have a transformer from a dead microwave. Its schematic diagram shows a primary coil, a secondary coil, and a third one named F. The primary (115 volts) appears to be two or three turns around the core, insulated all the way, with both ends sticking out. This primary winding is sandwiched between the other two coils, both of which have many windings. One of these coils has two connectors sticking out of the windings. The other, with very fine wire, has one connector on the windings, and the other connector is attached to the frame(why?), with the other end of the fine wire attached to it.
How can I measure the voltage of the outputs? I have a multitester, but if I connect it across the outputs won't I just trip a breaker with no load on the output?
There is a series of numbers on the transformer's sticker but I have no idea how to translate those into something meaningful. (YEC DPC OBJY2 YN-685)
Thanks for any help.