Should your voltage stages are unstable (ie: power stays on, but the particular voltage amount may differ quite a bit through the 220V common), then I think that's the kind of state of affairs exactly where an AVR is useful. For large power units, dynamic uninterruptible power provides (DUPS) are https://waxandcopureskin95937.daneblogger.com/32905986/the-basic-principles-of-ups-uninterrupted-power-supply