If your voltage amounts are unstable (ie: power stays on, but the actual voltage level may differ a great deal from your 220V regular), then I think that's the kind of situation in which an AVR is useful. Whilst that is a lot a lot better than the output we https://hollywoodwaxbangkok81468.blogzet.com/the-basic-principles-of-ups-uninterrupted-power-supply-48585015