Development of switch mode UPS

UPS stands for Uninterruptible Power System- Which simply means a power supply which cannot be broken. Usually any power supply is fed from the commercial power which is distributed by me C.E.B., but this means that any time when there is a commerc*' power failure power supply is broken or interrupted. Thererore in order to be uninterrupted, this has to be fed with another source of power. That power source is non other than a j-eac Acid Batter