Uninterruptible Power Supply (UPS) Schematic


Posted on Feb 6, 2014

This circuit will provide electric power from a backup battery when AC power is cut, always providing a clean 5V power supply for sensitive equipment like microcontrollers and logic circuits. The value of C1 is to be higher than 220 µF. The bigger the capacitance of this capacitor, the more power you can deliver to your circuits. The 9. 6 V NiMh Ba


Uninterruptible Power Supply (UPS) Schematic
Click here to download the full size of the above Circuit.

ttery can be replaced with any equivalent battery whose voltage is more than 7. 5V. A charger can be constantly connected to the battery from the same 220V source as the rest of the circuit, but depending on the battery and charger type, this procedure can shorten its life. For a clean transition from AC to Battery operation, especially with microcontrollers, use 10nF decoupling capacitors (ceramic capacitors) as near as possible from the concerned IC.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Rlc-oscillator
    Frequency Divider For Measurements Circuit
    How Discrete Voltage Regulator with Current Limiter Works
    wire three-way circuit between two buildings with only 3 conductors
    Oatley K272 JAN 6418 Valve (Tube) Preamplifier / Headphone Amp Kit
    sweep
    555 timer voltage controlled oscillator
    Compact Switching Step-Down Converter By MAX639
    Test Transmitter
    100W HiFi Audio Amplifier Circuit



    Top