Abstract: Most of the us who own a computer use uninterruptible power supply as a backup source to charge our computer. It is an important device present in offices, libraries, universities, industries, data centers etc. UPS is designed so well to offer temporary power during outages and maintain steady power supply during fluctuation from the utility lines.  The UPS system has an inverter which recreates the AC power from the DC power stored in the battery bank. The UPS is first introduced in 1934 and it has a quite interesting story. This paper describes the development of UPS from 19th century till now and explains about the future trends of the UPS technology and how it benefits the customer.

Keywords: Uninterruptable power supply, electricity, safety, trends

| DOI: 10.17148/IARJSET.2023.10931