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 circuit can be used as a basis for a power control where the comparator directly excites the...
This simple strobe light is from an article in 1982. Its complete circuit, very simple, appears in the...
This circuit for old analog TV was found in the May 1978 issue of Radio Electronics magazine. The...