In this video, I'll show you a very simple traffic signal light circuit using three BC547 transistors and other simple components.This circuit will flash three LEDs. The time interval can be changed by adjusting the capacitors. More power capacitor decrease speed and less power capacitor increases the speeds.
Circuit Diagram : https://drive.google.com/file/d/1LFGf...
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Component List :
1. BC547 Transistor ( 3 Pis )
2. 1K Resistor ( 3 Pis )
3. 150K Resistor
4. 100K Resistor
5. 39K resistor
6. 100 Ohm resistor
7. 220uF Capacitor ( 2 Pis )
8. 100uF Capacitor
9. Green LED
10. Yellow LED
11. Red LED
12. Some Jumper Wire
13. BradeBoard