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Introduction: Traffic Light Project

Hii friend,

Today I am going to make a circuit of traffic light.This circuit I will make using BC547 Transistors.

Let's get started,

Step 1: Take All Components As Shown Below

Components required -

(1.) Transistor - BC547 x3

(2.) Resistor - 1K x3

(3.) Resistor - 100K x2

(4.) Resistor - 33K x1

(5.) Red LED - 3V x2

(6.) Yellow LED - 3V x2

(7.) Green LED - 3V x2

(8.) Capacitor - 25V 470uf x2

(9.) Capacitor - 25V 100uf x1

(10.) Battery - 9V x1

(11.) Battery clipper x1

Step 5: Connect Yellow LED to Transistor

Solder +ve legs of Both Yellow LED to Collector pin of 3rd Transistor as solder in the picture.

Step 12: Connect 470uf Capacitors

[Capacitor 1] - Next connect +ve pin of 470uf capacitor to Base pin of Green LED and solder -ve pin to Collector pin of Yellow LED as solder in the picture.

[Capacitor 2] - Solder -ve pin of 2nd 470uf capacitor to Collector pin of Green LED Transistor.

Step 15: Connect Battery

Now circuit is completed so connect Battery to battery clipper and see the Traffic Light how it is glowing.

NOTE : We can Increase/Decrease the timing of Red,Green and Yellow wire glowing by changing the values of capacitors.

Glowing of Traffic light I tried to show in the above pictures.

Thank you

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Traffic Light Project: Hii friend, Today I am going to make a circuit of traffic light.This circuit I will make using BC547 Transistors. Let's get started,

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Digital Electronics: Logic Gates - Integrated Circuits Part 1