|Cotek SK3000-148, 3000 Watt 48V Pure Sine Wave Inverter|
Because they produce no harmonic distortions in the frequency, pure sine wave inverters allow any electronic device to function well without overheating or creating an irritating “buzz” sound. Though pure sine wave inverters are undoubtedly the best and most versatile kind of inverter, they are more expensive than modified sine wave inverters.
The image below displays the difference between a pure sine wave and a modified sine wave.
Modified sine wave inverters can work for the majority of low-end appliances, but take caution when using them for your electronic devices. Because these inverters do not produce a clean output, a “buzz” often accompanies modified sine wave inverters. Highly sensitive electronic products that were intended operate with a clean AC waveform will certainly overheat when connected to a modified sine wave inverter. Since modified sine wave inverters are less efficient than pure sine wave inverters, the excess energy produces heat that can be detrimental to some devices. The impure energy produced by modified sine wave inverters can curtail the longevity of many appliances, and utterly destroy some electronics that were originally designed for clean AC.