This traditional TTL configuration was obtained in a 1977 documentation. The supply must be made with 5 V and the capacitors can be changed for operation at other frequencies.
This simple circuit was found in an English magazine that no longer exists, January 1970 issue. It is...
This circuit, suggested by a 1975 documentation, detects an electrical discharge in a storm by...
This circuit for timing small loads was found in a 1964 General Electric documentation....