Today I am going to make a circuit for Wire Tripper security alarm using 12V Relay.if someone cut the wire then buzzer will give sound and LED will be glowing.
Let's get started,
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Step 1: Materials Required -
Step 2: Connect Pins of Relay
Firstly we have to Connect common pin and coil-2 pin of the Relay as solder in the picture.
Step 3: Connect Buzzer to the Relay
Next solder +ve pin of buzzer to Normally Close (NO) pin of the relay as you can see in the picture.
Step 4: Connect 220 Ohm Resistor
Next solder 220 ohm resistor to +ve leg of LED as solder in the picture.
Step 5: Connect LED to the Circuit
Next Solder +ve leg of LED to +ve pin of buzzer and
Solder -ve leg of LED to -ve pin of buzzer as you can see in the picture.
Step 6: Connect Battery Clipper Wire
Next we have to connect battery clipper wire to the circuit.
Solder +ve wire of battery clipper to coil-2/common pin of the Relay and
Solder -ve wire of battery clipper to -ve pin of buzzer as you can see in the picture.
Step 7: Connect Wire Between Buzzer -ve Pin to Coil-1 Pin of Relay
Next solder a wire from -ve pin of buzzer to coil-1 pin of the Relay as you can see in the picture.
Step 8: Connect Battery and Cut the Wire
Now wire tripper security alarm circuit project is completed so connect battery to the Battery clipper and cut the wire which is connected between -ve pin of buzzer to coil-1 pin of the Relay.
Step 9: Result
As we will cut the wire then LED will glowing and buzzer will give sound.
This type we can make circuit of wire tripper security alarm using Relay.