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+---- Thread: working principle of rain alarm circuit (/showthread.php?tid=34885)
working principle of rain alarm circuit - ankita - 08-17-2017
i got the simple circuit for making rain alarm..it consists of 2 transistors,2 resistances,capacitor.alarm,battery,etc..can you plz tel me what is the working principle?..how current flows,what is the use of transistor in it ,etc,etc..