| Square wave, Quasi sine wave or any modified output wave form inverter other than sine wave will not provide peak performance and have certain limitations. Sine wave inverter provides regulated pure sine wave output for which all electrical & electronics items are designed. |
There are certain sensitive and medical equipments which require pure sine wave output inverters, The performance of a pure sine wave inverter is definitely superior than a square wave or quasi sine wave inverter. Therefore, these can be used anywhere- HOMES, SHOPS, OFFICES, HOSPITAL & Other critical areas/applications. These inverters are based on DSP technology, designed specially for power processing application. Which is widely used in space, Telecom, Military and critical applications. 
