Latest advance Futuristic technology in the field of Inverter/UPS is High Frequency Sine wave Inverter/UPS which works on Advance High frequency IGBT & DSP based Multi-Conversion PWM Technology. EAPRO is working on multi conversion technology to switch IGBT at higher frequency. Because of high frequency size of Power transformer reduces drastically, but at the same time electronics involved increased. Due to small size transformer, the weight of the Inverter/UPS is 60 – 70% lesser than the DSP based Sine wave home UPS/Inverter and also the efficiency of the inverter/UPS is much more than the DSP based Sine wave home UPS/Inverter. But due to more electronics and advance technology used in it the cost is slightly more than DSP based Sine wave Inverter/UPS. Due to high frequency, we can get high Crest factor, useful to run moterised or inductive loads. The quality of sine wave of the High Frequency Sine wave Inverter/UPS is excellent without any distortion even on tube light load. Because of 60% lighter weight & size transformer and light weight, it is also called as “Transformer less Inverter/UPS”.