This power supply has a resolution of 10 pA in the current range from -100 to +100 nA. The circuit is from a 90s Electronic Design operating with voltages from -4 to +3.5 V.
The configuration shown in the figure uses two NPN transistors activating the load when the input...
In the absence of a 5 V zener diode, we can create an equivalent configuration with two...
This circuit provides 6.3V of output from a 9V input. The circuit was found in a Dutch publication from...