This interesting circuit of an Electronic Design stores the highest voltage of two applied to its inputs. The circuit is from 1964 and can be adapted to use modern components.
This circuit was originally designed to monitor the temperature of a vehicle. The integrated...
This circuit was obtained in a Popular Electronics of the 90s. It warns when the indicator lamp is...
This amplifier circuit with two transistors was found in a Mullard transistor manual from 1960. The...