POWER SUPPLY FAILURE ALARM CIRCUIT WITHOUT BATTERY BACKUP
This circuit alarms you whenever their is a power failure in your mains supply and the circuit doesn't use any additional Voltage Source. It is simple to design and effective to construct. Power failure alarm circuit monitor your supply line and trigger the buzzer to produce beep sound when their is a Voltage drop. This circuit finds applications in Refrigerators, Fish Tank, air conditioner etc... All the components used in this circuit is cheap to buy and easily Available in the market. CIRCUIT DIAGRAM FOR SIMPLE POWER FAILURE ALARM COMPONENTS AND THEIR SPECIFICATION FOR POWER SUPPLY FAILURE ALARM CIRCUIT WORKING OF SIMPLE POWER FAILURE ALARM CIRCUIT The circuit mainly consisting of a stepdown Transformer, a bridge rectifier, an PNP transistor and a buzzer. The stepdown Transformer step-down the high Voltage AC to a safer value for the circuit to work fine. And this low Voltage alternating Current is now fed to a Bridge rectifier to make it unidirectional. The diode D2 and Capacit...