The movement of the LEDs in this circuit mimics the back-and-forth movement of a pendulum, making it suitable for clock projects. The circuit is from a Radio Electronics magazine from May 1978.
This circuit was found in a 90s Popular Electronics. The circuit uses several relays in order to...
This circuit was obtained in an old manual valid for practically any type of operational...
This bank of switches can be programmed in a variety of ways for logic experiments. The circuit is from...