This step of good gain was obtained in an American publication of the 1980s. The circuit can be powered by voltages from 3 to 9 V and the FET can be of almost any type.
In the figure we have the simple way to implement the NO-OR or NOR function with common diodes and a...
The circuit shown is from the 1994 National Semiconductor Linear Applications Handbook. The...
This circuit appears elsewhere on the site. The circuit shown is from an American 1980s...