Indicated for 12 V systems, this circuit was obtained in a 90s Siliconix documentation. The components used are from the time and current equivalents can be tested.
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...