I want to design a circuit to blinking three LED in a row with 2 second delay for shifting/changing using analog elements only (using Resistors, Capacitors and Transistors and without Micro Controllers).
To be more clear, let assume I have three LED on my board that named LED1, LED2 and LED3.
This is the procedure:
- LED1 turns on at the power up and the two others are off now.
- After 2 seconds, LED1 turns off and LED2 turns on.
- After 2 seconds, LED2 turns off and LED3 turns on.
- After two second go to step 1 and repeat again.
How can I design it?
Thanks in advance.