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This project report is a thesis written specifically to cover the design analysis construction, test and packaging of a multipurpose security system from electric component that can be easily be obtainable from the market. The report discusses the various unit and stages of the alarm system, thesis include:- a) Clock generation and frequency division unit. b) The control and section unit, comprising of a one shot 555 timer multiplexer, […]
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1.0 INTRODUCTION 1.1 BACKGROUND OF THE STUDY The need for having home protection has always been there. But in the recent times, considering a dramatic rise in petty crimes like robbery and theft, the need has been more strongly felt to have a fool proof protection of the belongings and the family members. Home security has come a long way in the last few decades. It was in the hands of a guard who manually provided surveillance during […]
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5,041 Words
Aim: This main aim of this work is to build a simple fire alarm. Fire alarm is an electronics device that is stored in a building to detect the presence of fire accident. An automatic fire alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. Method: The device was first built on a breadboard which is later transfer to vero board and soldered. Result: The devi […]
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7,447 Words
Sensitive Touch Alarm system is an electronic device that can be used as a security device. It is an electronic watch dog, because when installed to a door, and somebody touches the door, it sounds an alarm. The unit is built from discrete semi conductor device. It is relatively simple in both its operation and analysis. One particular feature of this project circuit (the door alarm system) is its versatility. The circuit can be adapte […]
49 Pages
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7,070 Words
A battery charger is an electrical device employed for charging batteries. These batteries that are usually charged by battery charger are the storage batteries also known as “accumulator” the battery charger changes. The alternating current forms the power line into d.c suitable for charging. When the battery is fully changed, is up to it’s maximum, 12 volt, the charger with automatically cut-off with the help of the contact relay […]
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6,801 Words
A wailing alarm is a loud electronics device that produces sound similar to police siren. Siren is used to get other road users or drivers on the road out of their way. This project is on wailing alarm sound that sound effects like the siren of an ambulance or police car which features low-pitched tones alternately. This project will be comprised of the oscillator circuits of two set. Using IC-555 timer IC are main both unit. The first […]
48 Pages
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5,206 Words
Battery or bird cages are homes for domesticated birds. Birds require a house in which they can fly and have some freedom but still ensure they do not fly away. Bird cages are constructed to be large enough to accommodate the motion and daily activities of domesticated birds. This work was carried out to build a bird cage using available materials.