This circuit is from the Texas Instruments operating amplifier manual. Any operational can be used and the font need not be symmetrical. Rf and Rg determine the gain of the circuit.
This circuit employs an old germanium transistor. The circuit is from a 1950s publication and uses...
In the absence of a 5 V zener diode, we can create an equivalent configuration with two...
We found this circuit in a publication with experiments with operational amplifiers from 1973. The...