Obtained from a 1980s Signetics documentation, this circuit uses a common integrated circuit at the time. The performance curves are given next to the diagram.
Found in an American publication of 1968, this circuit makes use of a pilot light of the time. It...
This circuit turns off after a time that depends on C1. The circuit is from an Electronics Now...
This circuit for a decorative robot was found in the April 1988 Radio Electronics magazine. The...