Based on the CA3161 and CA3162, this circuit was found in the July 1990 Radio Electronics magazine. The circuit is two digits only.
The purpose of this circuit is to improve the reception of signals from the short-wave band. The...
This highly sensitive light sensor was found in a 1970 General Electric documentation. The circuit...
This circuit was found in a Popular Electronics from the 90's. The CMOS integrated circuit used is...