Pure Sine-wave vs Modified Sine-wave

Compare the differences between a pure Sine-wave and modified Sine-wave inverter before price influences your decision. These differences are also true for UPS'.

Pure Sine-wave inverter/UPS
This is the best output waveform from an inverter and all appliances are able to run off it without interference or damages. The output voltage waveform is pure sine-wave which is the same as the ESKOM supply. Listed below are a few uses and advantages:

• Prevents crashes in computers and noisy monitors
• Inductive loads like microwave ovens and motors run quieter and cooler
• Reduces noise in fans, fluorescent lights, audio amplifiers, TV, Game consoles and fax machines
• It is protected against overload, over voltage, under voltage and over temperature conditions

Modified Sine-wave inverter/UPS
The Modified sine wave inverter has limitations. These are some appliances that may experience problems when powered from Modified Sine-wave inverters:

• Medical equipment
• Radios, audio equipment and some television sets
• Any microprocessor controlled equipment
• Computer equipment
• Battery chargers for cordless equipment
• Power tools with variable speed control

Modified Sine-wave inverters are usually as vulnerable to supply and lightning damages as the equipment it is suppose to protect. A pure Sine-wave inverter is far more superior to a modified Sine-wave in the sense that it can be used on any equipment. The same goes for UPS'.