Win a Portable Generator for Outdoor Living | MOTHER EARTH NEWS
Clean Power Grid power is what’s called “alternating current” or AC. This means that the voltage moves from positive to negative rapidly and repeatedly. In the case of most modern power systems this flip-flop from positive to negative and back again happens 60 times each second. The smoothness of this polarity flip-flop is referred to as purity of the power or its cleanliness, and this matters when it comes to powering sensitive electronics. The best generators for outdoor living put out power that’s a clean, smooth sine wave pattern, without spikes or jagged edges on those sine w...