How to make a fire alarm using battery 9v simply

by | Feb 6, 2019 | Electronic Project | 5 comments

What is the work of buzzer

Working Principle of Magnetic Buzzers. The moving disk during a magnetic buzzer is drawn to the pole by the field. once AN periodical signal is touched through the coil, it produces an unsteady field that vibrates the disk at a frequency up to that of the drive signal.

House fires area unit a heavy danger. several fatalities occur throughout fires at midnight, in homes that either does not have a smoke detector or have a non-functional one put in. Maintaining your smoke detectors properly will cut the probabilities of dying during a house hearth considerably. Learn additional regarding the way to maintain your smoke detectors to guard your life and property.

Circuit Schematics

Components needed for this Project

You can get the components from any of the sites below:

  • resistors with values between 100 ohms…[ Purchase This  Amazon  |  Aliexpress  ]
  • Buzzer…………… [ Purchase This  Amazon  |  Aliexpress  ]
  • BC547 ……………………………………….[ Purchase This  Amazon  |  Aliexpress  ]
  • 1 LED……………………………………….[ Purchase This  Amazon  |  Aliexpress  ]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

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