Parts Of Security System

A Presentation By • • • •

Muhammad Ahmer Naeem Mirza Adnan Zahid Hafiz M Mohsin Bashir Awais Ahmed Jaan

Applications of Electronic devices       

Computer circuit designing Security system Counting system Automatic door system Automatic street lighting Exposure meter for photography Sound tracks of movies

Parts of security system LED

(light emitting diode) Photo diodes Resistances Batteries Buffer Gate

LED (light emitting diode)   

Specially designed p-n junctions Light emitting property Forward biased

Photo diode • Special designed p-n junction • Detection of current • Detection of visible light • Detection of non-visible light • Logic circuits • Optical communication equipment

LED

Resistance

Battery

Battery Photo diode

buffer

Resistance

Battery LED

Resistance Buzzer

Photo Diode

Battery