Here is a picture of the transformer in question.
I have scrapped this transformer from a 24V UPS for experimentation purposes. All the DIY's available on internet and general transformer guides on the internet talk about transformers having 2 wires on input side, but I see more wires on the input side. What kind of transformer is this?
I want to find out what the purposes are of these wire, and how I should proceed? I want to reverse engineer it without taking it apart. I have a multimeter to probe, but searching on the internet just tells me how to find the primary and secondary which I already know. Is there anything else that can I do to know its functioning and its purpose.
I have a few more question regarding it. Since this was originally built for a 24V supply, can I get 12 volt output from it? I ask this because since the primary has many wires, I may be able to find a positive wire from the set of input which will provide 12 V output.
Will it be safe to do the following things?
Connect the output to voltmeter in AC mode.
Connect input side black wire to neutral terminal of 240VAC
Test the output on the voltmeter by joining the remaining input side one by one to see which input will give me 12V.
I have another doubt, suppose I feed 220V to the black and yellow wire, and I get 9V on output side, after applying a full bridge rectifier on the output, will there be an increase of voltage? If yes how should I calculate the final output voltage that will come after applying rectifier?