In the figure we have the way to implement a NO OR or NOR gate with an operational amplifier. The number of inputs can be changed.
We find this circuit in the 80's own component manual itself. The characteristics of the circuit...
We found this amplifier with high input impedance and low capacitance, using FET, in a...
This circuit was obtained in a 1979 magazine, but it can be easily assembled today, as the...