The circuit shown in the figure can be designed with more modern operational amplifiers, as it is from 1994 documentation by National Semiconductor. The power supply must be symmetrical.
This circuit is from a 1965 Motorola documentation. The transistors are of the time as is the...
This circuit measures the conductivity of a saline solution, which is affected by the electrolysis effect....
March 2017 - Coilcraft SLR series inductors for currents up to 100 A can be obtained from Mouser...