This circuit was found in American documentation from the 1980s. The integrated circuit used is a voltage comparator of the time. Modern equivalents can be tested.
This circuit consists of a current regulator that can be used in battery chargers. The...
This circuit was obtained from a 1980's QST magazine. The circuit can generate 1 to 15 MHz signals...
This circuit, from an old Argentine publication, provides 6 W of output from an output of less...