• The Construction Of A Light Sensitive Alarm System

  • ABSRACT -- [Total Page(s) 1]

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    • A DETAILED STUDY ON THE CONSTRUCTION OF A LIGHT SENSITIVE ALARM SYSTEM
  • ABSRACT -- [Total Page(s) 1]

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    • CHAPTER ONE - [ Total Page(s): 1 ]CHAPTER ONE1.1             INTRODUCTIONThe light sensitive alarm is an electronic circuit that detects a sudden shadow falling on the light sensor and sounds the bleeper. When this happens, the circuit will respond to gradual charges in brightness to avoid false alarm. The beeper sounds for only a short time to prevent the battery from running flat. Normal light can be use. The circuit will work best if a beam of light is made to fall on the light sensor. Breaking this beam will then ... Continue reading---