Using an RCA integrated circuit, this instrumentation amplifier was found in a November 1970 Radio Electronics magazine. The instrument has a full scale of 100 uA.
This 3V-only circuit was found in old American documentation, but can be implemented with...
The output voltage of this circuit, which can regulate the current in a load between 0 and 1 A,...
This circuit was found in a Popular Electronics from the 90s. The circuit has temperature...