This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit is powered by only 3 V and can be used for signaling.
This 1987 circuit uses a common ignition coil to generate high voltage to power a fluorescent lamp that...
The sound of drums can be obtained with these two touch-triggered double-T oscillators. The...
This high-precision circuit was found in documentation from the 1990s. The integrated circuit is...