This precision circuit was found in ancient American documentation. The most critical component is the PMOS transistor. The power supply must be symmetrical.
Found in a 90s Maxim documentation, this circuit disconnects the battery in case of overload. The...
In the figure we have a voltage / frequency converter circuit that can be used as a transducer interface...
This circuit is from a 1979 documentation. The FET can be the BF245 or MPF102 and the bipolar...