This circuit was proposed by a 1965 Electronic Design. Its purpose is to widen the line transients to make them easier to see on common oscilloscopes.
Using a piezoelectric sensor of the time, this circuit was found in the February 1994 issue of...
This re-triggerable circuit was found in the April 1988 Radio Electronics magazine. Timings are...
The coil of this receiver consists of 100 turns of wire 38 to 30 in a ferrite rod and the...