Basic Delay Circuit - Useful for Car Fan Relay control (So the fans dont turn on and off too often and burn out the starter coils.)
This example is using the ECU's 5v output which it converts from an Earth (Going Low) signal to output the 5v.
- The light is the 40A relay to drive the fans
- The two 5v are from the same source
- The switch on the right is a simulated Ignition switch
