Results tagged #Rain Alarm in Circuits
Rain Alarm
Rain Alarm. This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used....
Rain alarm-door bell
With SI open the circuit functions as a doorbell. With SI closed, rain falling on the sensor will turn on Ql, triggering Q2 and the thyristo...
Rain alarm
The circuit uses four NAND gates of a 4011 package. In each oscillator, while one gate is configured as a straightforward inverter, the oth...