This circuit converts negative logic signals to positive logic signals. We found it in 1969 documentation. Current equivalent transistors can be used.
The operational amplifier can be of any type in this circuit, found in a 1974 publication. The...
Found in a 1967 General Electric SCR manual, this circuit triggers in case of excess current,...
With this configuration it is possible to obtain an 80 dB gain from two 741 operational...