panic alarm mini project report pdf or ppt
#1

I kindly request you to send me the introduction of panic alarm using ic555 ,its working principle,operation of the circuit,advantages and applications of the circuit..................etc
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#2
panic alarm mini project report




Circuit Diagram

This is a simple circuit named Panic Alarm which helps in intimating others regarding our bad situation without any delay. This circuit is made with a low cost hardware using IC 555 timer, buzzer, a few resistors and capacitors. Are you interested to get complete information about this circuit and its applications? Then read the post: Panic Button Alarm Circuit.

Imagine the Panic situation in the Midnight when an intruder tries to break into the house. This Alarm will help you with its loud Police siren to abort the attempt of intrusion. With a single clap, the circuit generates the alarm for three minutes and then goes off. This is sufficient to catch the attention of neighbours.

The circuit is a sensitive Clap switch with timer action. IC1 is designed as a sensitive inverting amplifier to amplify the sound signals from the condenser mic. Variable resistor VR1 set the sensitivity of mic and resistor R1 and VR2 set the gain of the amplifier. If the sensitivity of mic and amplifier is suitably adjusted, the circuit can detect the sound from a distance of 5meters or more.
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