An unexpected shutdown of important electricity is constantly seeming a very unpleasant incident. It is very good when this does not give a certain opportunity to drink hot good tea or not save all kinds of files on your personal computer. The cost of a specific accident in a certain electrical network may well be very important human lives. Today — in this difficult period, a fairly qualitatively developed certain systems of a particular provision of important autonomous and possible uninterrupted nutrition are developed. The simplest of them are represented by certain UPS, which are capable of after a possible shutdown of electricity, a very small amount of minutes can qualitatively maintain an important voltage in a particular network. This gives a good opportunity to very calmly finish a certain and very important work and specifically disconnect possible devices.
