This TTL sequential flasher circuit was found in the January 1981 issue of Radio Electronics magazine. It is powered by 5 V. The frequency can be adjusted by R1.
This 1968 documentation circuit uses a relay to control loads up to 1 kW (depends on relay...
We found this conventional receiver circuit in a 1990 documentation. The circuit includes an audio...
This circuit for the positive front of a rectangular signal was found in an old documentation, but applies...