This 3-digit digital gauge was found in the July 1900 issue of Radio Electronics magazine. The circuit is based on the CA3161 and CA3162 A/D converters of the time.
The circuit shown is from the 1977 GE semiconductor manual. The circuit uses a controlled silicon...
When a voice signal enters this circuit, the volume of the music being played automatically...
This interesting circuit was found in a 1967 Japanese documentation. Transistors are types of...