Hi i have take off one transformer from an APC UPS, and now i don't know what to do with it.
Can someone tell me if i can use this transformer for something useful like audio amp or etc. How powerful is it? Ideas?
Could you post the weight of this transformer to confirm that it's the main unit? (Or, a photo against a ruler/scale.)
If this is the only power transformer, it should be able to transfer 600VA intermittently and 200VA continuous. It would probably have (insert your mains voltage here) to 12VCT, plus other windings that will produce about (insert your mains voltage here) from the battery.
I really hate it when I have to guess where a person is.
The mass and size confirms that this is the main transformer. We believe that it's good for 200+ VA continuous, however your friend should check what voltages it actually produces. Typical voltages in this applications aren't optimum for audio amplifier systems. This transformer is targeted for 12V (14.4V to charge the battery) on the secondary, while audio systems are expected to be 4-8 ohms. (200 watts into 8 ohms normally would use +/- 40 volts DC.)