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.
We found this circuit in a 1968 Electronics World. The transistors are from the era and...
This circuit, which generates a linear sawtooth signal, can be used in a frequency-band...
The instrument of this field strength meter, from a 1970s publication, can be a 200 uA...