This circuit generates signals in four frequency bands with the threshold values indicated in the diagram. The circuit was found in the March 1996 issue of Electronics Now magazine.
This circuit, when triggered, locks, and remains so until the source is switched off for a moment or...
With the values of the components indicated, this timer controls intervals from a few seconds to a...
This circuit with a few watts of power was found in the April 1995 issue of Electronics Now...