This circuit is from the 80's documentation. The integrated circuit is from the time but can be implemented with modern equivalents. The power supply must be symmetrical.
This interesting circuit of the American publication Electronics Handbook Volume XIII 1993 shows a...
The circuit shown in the figure generates a rectangular signal whose frequency depends on C1. For...
This 4-competitor TTL speed game was obtained in a 1980s documentation, but can still be easily...