This circuit was found in the February 1997 Electronics Now magazine. The circuit has a power supply for the NE602 and free inputs and outputs for projects.
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
This circuit, which has a very common configuration, was obtained in a 1994 documentation. It can...
This two-tone buzzer can be powered by a solar panel. The circuit is from a 1991 documentation. The...