Obtained from an Electronic Engineering of the 90s, these circuits can be applied to almost any operational amplifier. Signal shapes are given next to the diagram.
This sensor circuit for currents of the order of nanoamperes was found in an American...
The sensor of this circuit is an NTC of 20 to 50 k resistance at room temperature. The circuit is from a...
This circuit is suggested by Texas Instruments in his Optoelectronics Sourcebook. The transistors...