What is the difference between Modified Square wave and True Sine wave?
Modified square wave is a cheaper way to make AC power. The power is turned on and off in each direction alternately, causing a wave shape that is roughly equivalent to a sine wave. However, it is electrically noisy and does not reflect a true sine wave. It frequently causes problems with audio equipment, light dimmers, clock radios and many power tools. A true sine wave has continuously varying current across the entire wave form giving a pure, clean output similar to what you would recieve from a mains outlet.
