Name : FIRE Alarm Physics Science Project.

Net Quantity (N) : 1

Fire alarm science project

Transistor T1 working as SWITCH under Common Emitter configuration, whose output from collector is fed to the LED and Buzzer to give audio visual indication

When thermistor is being heated by match stick, the internal resistance drops to a certain extent. This makes transistor to conduct and that allows the current to flow from positive to negative through LED and buzzer in parallel

Country of Origin : India