how to make a simple FIRE ALARM using thermistor

Опубликовано: 17 Июнь 2026
на канале: GREENBANDS
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How to make simple smallest fire alarm circuit using transistor and thermistor 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.

Circuit diagram : https://greenbands17.blogspot.in/2017...

My channel:    / @greenbands116  

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