FIRE ALARM CIRUIT using thermistor ans

FIRE ALARM


How to make fire alarm in just 2 Mins || Fire alert using transistor.
An electronic mini project using BJT as a switch.

Things required:
Breadboard
1k ohm resistor
47 ohm resistor
BC 547 transistor
9v battery
10k thermistor
Wires.

Introduction:
          If a detector detects smoke or heat, or someone operates a break glass unit, then alarm sounders operate to warn others in the building that there may be a fire and to evacuate.


My channel: https://www.youtube.com/channel/UC2-xkjSNFWugwhbTBUiWIBw

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Comments

  1. I built your circuit and it works like a charm! But I was wondering how you got the values of 1000 ohm and 47 ohm? Why was the 47 ohm resistor at all? It would be great if you could show the calculation.

    ReplyDelete
  2. How did you get the values of resistors.
    I have to explain that to professor

    ReplyDelete
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  5. Very nice post. I absolutely appreciate this site. Continue the good work! Smoke Management System

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