In the figure we have 3 oscillators with logic gates that can be triggered by external logic signals. The circuits were found in the Radio Electronics magazine of April 1987.
This siren configuration found in a documentation from the 1980s can also be seen in many of our...
This alarm is either activated or triggered after a certain amount of time, giving the owner time...
This timer circuit is based on an integrated circuit configured as stable and a 14-stage 4020...