What is the difference between Modified Sine Wave and Pure Sine Wave power?
A. An inverter is an integral part of any battery-based system. It transforms the direct current (DC) electricity in the batteries into alternating current (AC) for powering your home appliances. AC power alternates between positive and negative voltage peaks and forms a wave pattern. When this wave has smooth curves, it is called pure sine – this is what you get from the power utility. A less expensive way to produce power is to approximate the smooth curve with many rectangles. The more rectangles, or steps, that are used the smoother, or cleaner, the wave output becomes – this is called a modified, or square waveform. Modified sine wave power will operate 95% of all loads exactly the same as pure sine wave power. Some loads won’t work at all, but usually the load just doesn’t work as expected. Digital clocks for instance use the peaks of the alternating current to keep time, a modified sine wave will confuse the location of the peak and cause the clock to lose or gain time unpredict
