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.
This interesting idea was found in a 1983 publication and is very simple to analyze, according to the...
This “Half adder” circuit uses NAND gates from a 7400. The power supply must be 5 V. ...
Indicated for the protection of three-phase systems, this circuit was found in an American...