1. Fire Alarm Manish Choudhary

2. 2nd - 3rd Nov. 2010Science Bus - Technology2 Course Plan  Highlight Importance of Fire Safety  Instructions to Set Up Fire Alarm  Ask Students to Assemble  Demonstration of Fire Alarm

3. 2nd - 3rd Nov. 2010Science Bus - Technology3 Electronic Circuit Diagram - 1 http://www.circuitstoday.com/low-cost-fire-alarm-circuit

4. 2nd - 3rd Nov. 2010Science Bus - Technology4 Parts – Electronic Circuit  Transistor BC177  Transistor BC108  Transistor AC128  Capacitor (100 µF)  Capacitor (2.2 µF)  Resistor (470 KΩ)  Resistor (100 K Ω)  Resistor (1 K Ω)  Diode IN4007  Battery – 9V  Buzzer – 1  Bulb – 1  Wire  Soldering Rod

5. 2nd - 3rd Nov. 2010Science Bus - Technology5 Simple Circuit - 1 Battery Bulb Wax Copper Plates Heat melts wax which connects the circuit Buzzer Wooden Board Nails

6. 2nd - 3rd Nov. 2010Science Bus - Technology6 Simple Circuit - 2 Battery Bulb Copper Plates Heat causes metal expansion which connects the circuit Buzzer Wooden Board Nails