How to make Fire Alarm Project

                                   

Fire Alarm Project

Objective

The objective of this project is to create an fire alarm. A fire alarm is a an electronic sounder or a bell. The sounder makes a loud high pitched sound to alert people that there is a fire in the building.Here the fire alarm devices senses the heat and activates the loud noise ..

Equipments

ü  Lm358 ic – 2p

ü  Photo Diode  -2p

ü  5k  variable resistor -2p

ü  4007 Diode -4p

ü  10k resistor -4p 

ü  Buzzer -1p

ü  Jumper Wires- As Required

ü  Vero Board -1p

ü  Power Connector-1p

ü  Connector -4p

ü  Power Adapter-1p

Circuit diagram  

Photo diode

A photodiode is a p–n junction or PIN structure. When a photon of sufficient energy strikes the diode, it creates an electron–hole pair. This mechanism is also known as the inner photoelectric effect. If the absorption occurs in the junction's depletion region, or one diffusion length away from it, these carriers are swept from the junction by the built-in electric field of the depletion region. Thus holes move toward the anode, and electrons toward the cathode, and a photocurrent is produced. The total current through the photodiode is the sum of the dark current (current that is generated in the absence of light) and the photocurrent, so the dark current must be minimized to maximize the sensitivity of the device

Power Adapter

6V DC 1A

INPUT 100-240V AC

HZ        50/60HZ

Buzzer

A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. Typical uses of buzzers and beepers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke.

Vero Board

Veroboard is a brand of stripboard, a pre-formed circuit board material of copper strips on an insulating bonded paper board which was originated and developed in the early 1960s by the Electronics Department of Vero Precision Engineering Ltd (VPE).

Jumper Wires

A jump wire is an electrical wire, or group of them in a cable, with a connector or pin at each end, which is normally used to interconnect the components of a breadboard or other prototype or test circuit, internally or with other equipment or components.

Working Steps

            1. Collect  all equipments

2. Soldering component in biro board. Make the fire sensor .
3. Soldering component Ander biro board make to control circuit . 
4. Connect all sensor to control circuit.
5.Make a starchier setup all circuit .
6.Connect adaptor to circuit .

7. Finish Some Decoration with Yellow and Black paper.