Today I am going to make a fire alarm circuit without using any transistor.
Let's get started,
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Step 1: Take All Components As Shown Below
Components required -
(1.) Battery - 9V x1
(2.) Battery clipper x1
(3.) Buzzer x1
(4.) IR Sensor x1
Step 2: Solder IR Sensor to Buzzer
Connect +ve wire of IR Sensor to the +ve of buzzer as shown in picture.
Step 3: Now Connect Battery Clipper Wire
Now connect +ve wire of battery clipper to -ve of IR Sensor and
-ve wire of battery clipper to -ve of buzzer as shown in picture.
Step 4: Now Connect Battery to the Circuit
Now connect battery to the circuit and use it.
Step 5: How to Use It
Burn fire across this circuit then buzzer will give beep sound.
Uses:- This circuit will help us to protect from fire.