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.
The circuit presented is based on a mechanical tuning fork. The circuit is suggested by National...
In this circuit of Texas Instruments an incandescent lamp is used as a light source, and lenses are...
One touch of the push button S1 and the circuit LEDs shown in the figure start to flash rapidly. The...