We found this battery eliminator in a Radio Electronics magazine from August 1974. The transistor must be equipped with a heatsink and other voltages can be achieved by replacing the zener.
This circuit appears with variations in other points of this section. This version is from...
With this circuit general purpose diodes and rectifiers can be tested with ease R has 100 ohm for...
The INA185 integrated circuit from Texas Instruments is a current sensor that can operate with...