This simple low current circuit was found in a Radio Electronics magazine from August 1960. The circuit does not use transistors in regulation, but only zeners directly.
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
This circuit from an old documentation includes the power supply for the 117 V power grid. It can be...
Although MOSFETs of the type indicated are not very easy to obtain, one can have the circuit as a...