Using a MAX644 this circuit was found in the April 1989 issue of Radio Electronics magazine. The circuit is for a 5 V voltage and 50 mA current output.
The circuit shown in the figure is suggested by National Semiconductor and makes use of an...
This circuit, suitable for tube equipment, was found in an old documentation. It uses a high...
This circuit is part of an integrated circuit tester published in an article in Radio Electronics...