This circuit was obtained from an American technical manual from the 80's. The integrated circuit is an operational of the time that can be replaced by a modern equivalent.
Using a voltage comparator, we find this AND gate on a Popular Electronics from the 90s. The...
We found this circuit in an old documentation from the 70s. Its purpose is to indicate the...
This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...