When your voltage concentrations are unstable (ie: power stays on, but the actual voltage level varies a whole lot through the 220V normal), then I believe that's the sort of situation wherever an AVR is useful. For large power models, dynamic uninterruptible power supplies (DUPS) are occasionally utilised. A synchronous https://gregoryuzvtq.blog5.net/77624593/5-simple-techniques-for-uninterruptible-power-supply-adalah