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 decoder TTL circuit for 15-channel remote control was found in Selezione Radio, Italian...
This is the circuit of a sensitive voltmeter using a difficult-to-obtain 5 uA full-scale...
This circuit compares two light intensities, providing the indication on an analog instrument. The...