Introduction: How to Make LED Blinker Using Relay
I am going to make a circuit of LED Blinker using 12V Relay.
Let's get started,
Step 1: Take All Parts As Shown Below
Step 2: Solder Resistor to LED
Firstly we have to solder 100 ohm resistor to -ve leg of the LED as solder in the picture.
Step 3: Connect Wire Between Common Pin to Coil-1
Next we have to solder wire between common pin to coil-1 of the Relay as you can see in the picture.
Step 4: Connect 2200uf Capacitor
Solder +ve pin of capacitor to coil-2 of Relay and
solder -ve pin of capacitor to common pin of the relay as solder in the picture.
Step 5: Connect LED to the Relay
Solder +ve leg of LED to the +ve pin of capacitor and
solder -ve leg of LED with 100 ohm resistor to normally open (NO) pin of the relay as you can see in the picture.
Step 6: Connect Power Supply Wire
Now we have to connect power supply wire to the circuit.
~ We have to give 12V DC input power supply to this circuit.
Connect +ve wire of input power supply to +ve of LED and
-ve wire of input power supply to normally close pin of the relay as you can see in the picture.
Step 7: Circuit Is Ready
Now our circuit is ready so switch on power supply of circuit and now we will observe that LED is blinking.
This type we can make LED Blinking circuit using 12V Relay.