05-10-2012, 04:20 PM
RAIN ALARM WITH AIR FLOW DETECTOR
RAIN ALARM.pptx (Size: 147.19 KB / Downloads: 95)
RAIN ALARM
A rain alarm is basically a device which gives an alarm when the sensor is in contact with water.
AIR FLOW DETECTOR
The air flow detector circuit can give a visual indication of the rate of air flow. It can be also used to check whether there is air flow in a given space.
COMPONENTS REQUIRED FOR RAIN ALARM:
1.Power supply of 12 volts.
2.555 multi vibrator.
3. Resistors of 10K,56 K.
4.Capacitor of .01µF,1µF/15V.
5.Speaker of 8Ω/0.5W.
6. Water sensor.
APPLICATIONS:
Rain Alarm can indicate the level of fluid in a container or simply the presence of fluid depending on the way the circuit is used.
Air flow detector is use in the ship, to check the air flow in the sea..