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

    stable guitar FM transmitter
    PC ROM emulator circuit
    Output-limiter
    Air-motion-detector
    Low Power FM Transmitter
    surround power amplifier lm3886
    passive riaa preamplifier
    28 LED Clock Timer Circuit
    Solid State Tesla Coil/High Voltage Generator Circuit
    2x16 LCD and 4x4 keypad example
    LTC3202 drive white LED circuit diagram
    Suitable for a low-cost high-quality student homemade amplifier
    Lantern controller circuit diagram of a two-dimensional



    Top