The main purpose of this project is to provide continuous power supply to a load, by selecting the supply from any of the four
sources namely solar, inverter, main and generator automatically in case if one the source is absent. The need of electricity is increasing
day by day and the frequent power cuts of electricity are causing many problems in different areas like banks, colleges/schools, hospitals,
houses and industries. Thus there is requirement for an alternate arrangement of power supply. This arrangement can be designed by
using ARM7 microcontroller and relays. When a source, say mains fails the supply automatically shifts to next priority source generator and
so on. LEDs (Light emitting diodes) can be used to show that which source is used to provide the supply.
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