I have a 120V AV receiver (amplifier) connected to a step down transformer for converting from 230V mains. This is the only electronic equipment in my home to completely lose power and turn off/on when the inverter (UPS) switches to battery and back to mains when there is loss of mains power. The inverter is pure sine wave and has a transfer time of <= 15ms. As you can imagine, this is very annoying and I have been trying to find a solution short of buying a very expensive double conversion online UPS.
My knowledge in electronics is very lacking so I would be very grateful if someone could answer my questions here:
- Why does connecting an equipment (driven by an SMPS, same as everything else) to a step down transformer cause it to completely lose power when the inverter switches?
- What can be done to prevent this? Could a capacitor be used at the input/output of the step down transformer?
Thank you 🙂