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.
This circuit is of great use today, when solar energy is becoming increasingly important. The...
This 80's circuit uses an operational amplifier of the time. The circuit can be applied to modern...
This circuit makes use of a Linear Technology LT6100 having been taken from the component...