This precision bench test circuit can deliver currents in a range of 10 uA to 10 mA. The circuit is from an 80's documentation. The components are from the time.
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...
This circuit provides an output voltage with the absolute value of the charge and discharge current...
With the figure circuit it is possible to control the amount of heat generated by the heating...