This circuit is suitable for calibrating old oscilloscopes. It was found in a 1980s documentation. It generates precise signals given by the crystal.
Here is another project that is based on an astable multivibrator, in a demonstration of the...
This circuit was found in an Elektor from the 90s. It is a circuit that generates different types of...
The circuit shown in the figure converts a sinusoidal signal of convenient amplitude into a CMOS...