I'm an absolute novice with elextronics but regardless i'm trying to build something that needs a 12V transformer. A colleague of mine once gave a whole bunch of 12V transformers (harvested from extractor hoods) to play around with. I've never needed one before today and the colleague doesn't work at my company anymore. For the life of me i can't figure out how this thing is supposed to work. I've tried all the connections and checked with a multimeter but i cant get 12V out of this.
I reckon i am missing something like a kind of "on switch" on one of the terminals which needs to be powered before giving 12V on the other terminals?
I was hoping one of you fine folks would reckognize what this is and what the function for each terminal is.
In the included photo the one with the black cap on it is in "new" state and the one with the wires from it is one that got salvaged but should still work regardless, those wires are the wires that were still attached to it in the extractor hood.
Kind regards, Stefan