MINI UPS SYSTEM

To make a system which works during power failure.

The output obtained is REGULATED DC.

Block Diagram

[Rectifier with filter] --- [Full charge indicator] --- [Cut off circuit] --- [Output section]

Circuit Diagram

    Mini UPS is to make a system in working condition during power failure. Battery will take the load when the main power is offline. Output of mini UPS is regulated DC. This mini UPS system uses center tap step down transformer, diodes, zener diodes, voltage regulator IC, transistors (BC 548, TIP 127) and LED. Voltage regulator IC 7805 takes a voltage between 7 and 30 volts and regulates it down to exactly 5 volts. BC 548 is general purpose silicon, npn, bipolar junction transistor.

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