Examine This Report on uninterruptible power supply (ups)
In case your voltage stages are unstable (ie: power stays on, but the actual voltage level varies a whole lot in the 220V common), then I believe that's the sort of scenario where by an AVR is helpful.A UPS device on your router and modem can also be terrific all through a power outage since you plug your cell phone charger into the router's UPS. W