Simple Fire Alarm Circuit Diagram. 1 x 10 K Thermistor. Here we have used Buzzer as a Smoke alarm which is driven by BC547 NPN transistor.
Circuit 1 Simple Fire Alarm Circuit This is a very simple alarm circuit using Thermistor LM358 Operational Amplifier and a Buzzer. A wiring diagram is a simplified conventional pictorial depiction of an electrical circuit. 1 x 10 K Thermistor.
It reveals the elements of the circuit as simplified forms and the power and signal connections between the devices.
The circuit senses ambient temperature using LM35 and checks the presence of flame with an IR sensor. Collection of fire alarm wiring diagram pdf. MQ6 gas sensor is also sensible to LPG Alcohol and Methane etc. You can see the circuit diagram of fire alarm in above figure.
