Help Identifying unknown Transformer
I got this transformer from an old ups, there are four wires on the primary side black, blue, green , yellow and two on the secondary red and blue. This transformer used to charge 12v 7.5ah battery also converts it back to 220V in backup mode.
Tried testing its output and got this
Black to ground
Blue to mains-> 7.9v on secondary
Connecting Blue and Green to mains and it was a shot circuit and blown my fuse. I want to use this for making a decent power supply 12v+ output, is this possible?
I also saw this video https://www.youtube.com/watch?v=mc4GZM-kFUY&hd=1
The guy is using his ups transformer for generating hv to power cfl using tip122, i am not sure how to do this using my transformer.
I need to make use of this transformer somehow, otherwise its just eating dust at my home.