This Linear Technology circuit can measure currents from 100 pA to 100 uA. The circuit is from the 80's, using a component of the era. Transistors are general purpose types.
More and more supercapacitors are being used as supplementary sources of energy in several...
This circuit has a correction or linearity adjustment. We found it in Ferranti's transistor manual...
This fixed regulator for currents up to 2 A uses a 741 operational amplifier. The transistor must...