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CONSTRUCTION OF A LIGHT SENSITIVE ALARM

  • Project Research
  • 1-5 Chapters
  • Abstract : Available
  • Table of Content: Available
  • Reference Style: APA
  • Recommended for : Student Researchers
  • NGN 3000

ABSTRACT

This write up is concerned with the construction of a light sensitive alarm. The light sensitive alarm is an electronic device that detects a sudden shadow falling on the light sensor and sounds the bleeper when. The light sensitive alarm helps to produce a kind of sounds used in industries, hospital ambulance, and police car and so on. The circuit is built around q 7555 low-timer IC (Integrated Circuit) to generate the required alarm signal. The current from the light sensitive materials switches on a transistor amplifier.




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