This indicator with the integrated circuits CA3162E and 3161E was published in the July 1990 issue of Radio Electronics magazine. The circuit can be used as a basis for 3-digit projects.
This low-frequency oscillator was found in a 1963 documentation. Capacitors determine frequency. The...
This timer for time intervals of up to a few minutes was found in an English publication in 1965....
Found in Radio Electronics this circuit has its action determined by resistor R1. The circuit does...