Newbie here. I've got this old line interactive type UPS which cannot drive any inductive load. I suspect the issue is with inverter side of the cct as there is no issue when the commercial supply is on. The load is just below 1A AC and I'm guessing a simple low pass filter might help. Just going through a hard time with designing one by myself as I'm not much familiar with filter so it would be a huge help if someone can give me a hand with the designing part. Here are the requirements. Frequency: ~50Hz AC voltage: ~230V AC current: <1A
Thanks in advance!