This circuit is from a 1980s Signetics documentation but is valid for modern operating. Next to the diagram the formulas for the calculation of the components.
The existence of field effect transistors at the input of the integrated circuit (operational...
This circuit generates a siren sound. It was found in the April 1969 Radio Electronics magazine. The...
Suggested by Siliconix in documentation from the 90s, this circuit can present gains of digitally...