Easy Traffic Light circuit with Transistor BC547🚦
in this video we are going to make a very simple traffic light circuit, we used three transistors BC547 and other simple composts..
This circuit will flash three LEDs, You can change time interval with change the capacitors. More power capacitor decrease speed and less power capacitor increases the speeds. You can also connect variable resistor on the place of 100K resistor to adjust the time interval as want. In fact, as you can see in the diagram, one of the three capacitors is 100uF while the other two are 220uF. The 100uF capacitor allows yellow LED to stay on for less time than the other two LEDs..
Components List:
3x 5mm LED [ https://bit.ly/2UzRDgR ]
5x BC547 NPN Transistors [ https://bit.ly/3cJtc9u ]
3x 2.7K Resistors [ https://bit.ly/2ytgn3e ]
3x 100K Resistors [ https://bit.ly/2ytgn3e ]
2x 220uF Electrolytic Capacitors [ https://bit.ly/2WlIgCt ]
1x 100uF Electrolytic Capacitor [ https://bit.ly/2WlIgCt ]
1x Bradboard [ https://bit.ly/3b2zv7k ]
Power this circuit with 9-12V DC
Electric Diagram at: 1:45
*use 25/50/100V Electrolytic Capacitor
Chapters:
0:00 - Intro
1:08 - Test
1:45 - Circuit Diagram
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