This circuit from an old documentation includes the power supply for the 117 V power grid. It can be adapted to other networks by changing the 10k resistors.
This circuit can be powered by 2 or 3 small batteries. The resistor can have values between 220...
This traditional configuration with the 555 was obtained in an 80s Hands-On Electronics. The relay...
Found in American documentation from the 1980s, this circuit shows how to use an LM3909 pulsator in a...