It's a water alarm circuit which is implemented for general purpose in home made use.
When water level come to the point of contacts then speaker will give alarm. You can also use a siron for alternate of speaker or calling bell. Best of Luck _ Md. Monzurul Islam.
Dnt mistake me........ Why is a timer circuit used to make the alarm shout...... I mean wont that be good if we send a continuous signal.......
ReplyDeleteyou can use any other IC also. But look, in this circuits I use this 555 IC for its higher sensitivity and longevity.
ReplyDeleteA little explanation would be good...
ReplyDelete