We found this circuit in Radio Electronics from the 90s. The components are current. The sensor is a common general-purpose transistor. The connection to the sensor is made by twisted pair.
We found this circuit in an old American documentation. Transistors can be modern equivalents. ...
In the figure we have the conventional configuration of a differential amplifier with the...
This 8 A high output power amplifier uses two National Instruments LM12s. The maximum capacity of the...