Indicated for scanning circuit applications, we found this generator in a Radio Electronics from the 80s. The components used are still common today.
These circuits from a May 1994 Electronics Now take advantage of the noise from the junctions of...
We found this amplifier for automotive use in the Philips integrated circuit manual from 1990. The...
This very simple circuit uses a phototransistor and a very sensitive relay (reed type) being used...