The circuit shown is for testing both signal diodes (low current) and rectifiers (high current). The circuit is from a 2000 Poptronics, and the transformer has a secondary winding of 100 to 300 mA.
Found in an article in the December 1974 issue of Radio Electronics magazine, this circuit is...
In the figure we have the way to obtain an adjustable constant current source of 2 mA. The...
Found in old documentation, this circuit uses an SCR like the TIC106 that must be equipped with a...