Touch alarm circuit pdf

The complete circuit diagram of the alarm system is shown in fig 6. Touch alarm circuit is widely used for security, which is installed on the door. C sace emax 2 low voltage air circuit breakers emax e1. This circuit will help you to guard your precious documents as well as jewellery from intruders or theft. Touch sensitive alarm circuit the low power ac hum signal is first amplified by the highgain preamplifier built around ic 741 ic1 and then fed to another opamp. Smart kit 1005 is a very easy project to built and will make you the proud owner of a magic switch that will respond to the slightest touch of your hand on its sensitive plates. This is a new type of touch alarm that uses an rf oscillator at its input. Needless to say, this is an ultra simple hobby circuit. A simple and reliable touch sensitive security system.

The alarm will provide quite loud audio output into an 8 ohm speaker with a 9v battery at a current drain of less than 100ma. Section two gives presentation of related works to the aim of this research. Hello friends in this video i will show you how to make a touch sensor. Simple security alarm circuit working and applications. A touch switch is an electronic device that enables us to control a circuit by simply touching a sensor. So, it is not difficult to build and modify applications, from simple switching, vibration systems, touch sensitive. Section four presents the experimental results and discussion of the results. Touch sensitive alarm detailed circuit diagram available. The complete circuit diagram of the alarm system is shown in fig 6 and. This book is writ ten for all the people who love innovation.

Technical specifications characteristics supply voltage. One special feature of this touch alarm is that it can use a bigsize touch plate. Touch the sensing plate of the alarm with your finger and it starts beeping and then stops. In section three, detail descriptions of the design and implementation procedures are presented.

This touch alarm circuit will sound when somebody touches the trigger plate. Here is five burglar alarm circuits for you can look as idea to protect their property from thieves or people do not look good. You can experiment with different component values r1,r2,c1,c2,r3 and r4, etc to make your own special alarm. All you need is just to place this circuit in front of the locker or below the mat so when any unknown person come and walk over the switch, the circuit will trigger and sound of alarm comes. Pdf a simple and reliable touch sensitive security system. Also, no shielded wire is required between the touch plate and the circuit. The advantages of this alarm is because the cost is cheap and difficult to detect by burglars intruders. This simple touch sensitive alarm is developed by using ne555 timer ic, operated as a monostable vibrator.